Organization
Scheduled update Associate Professor
Position
Associate Professor
External link
NAKANISHI Makoto
Degree
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Ph.D ( 2007.3 Kyoto University )
Research Interests
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磁性材料
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Ferrite
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Magnetic Materials
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無機材料
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Inorganic Materials
Research Areas
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Nanotechnology/Materials / Inorganic/coordination chemistry / solid state chemistry
Research History
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Okayama University Environment Health & Safety Intelligence Department Associate Professor
2023.4
Country：Japan
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Okayama University Environment Health & Safety Intelligence Department Associate Professor
2023.4
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Okayama University Environment Health & Safety Intelligence Department Assistant Professor
2020.4 - 2023.3
Country：Japan
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Okayama University The Graduate School of Natural Science and Technology Assistant Professor
2007.4 - 2020.3
Country：Japan
Professional Memberships
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日本労働衛生工学会
2022.5
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THE MAGNETICS SOCIETY OF JAPAN
2018.8
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粉体粉末冶金協会
1996.4
Committee Memberships
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中国・四国地区国立大学法人等労働安全衛生協議会 労働安全衛生管理専門連絡会議 構成員
2022.4
Committee type：Other
Papers
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Co-substituted Ca-La magnetoplumbite ferrite microwave absorbers at 100GHz Reviewed International journal
Kazushige Hyodo, Jun Kano, Makoto Nakanishi, Tatsuo Fujii
Applied Physics Letters 122 ( 11 ) 112403 - 112403 2023.3
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Co-substituted Ca–La magnetoplumbite ferrite microwave absorbers at 100 GHz Reviewed
Kazushige Hyodo, Jun Kano, Makoto Nakanishi, Tatsuo Fujii
Applied Physics Letters 122 ( 11 ) 2023.3
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Eco-Benign Orange-Hued Pigment Derived from Aluminum-Enriched Biogenous Iron Oxide Sheaths. Reviewed International journal
Katsunori Tamura, Yuri Oshima, Yuta Fuse, Noriyuki Nagaoka, Tatsuki Kunoh, Makoto Nakanishi, Tatsuo Fujii, Tokuro Nanba, Jun Takada
ACS omega 7 ( 15 ) 12795 - 12802 2022.4
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Katsunori Tamura, Tatsuki Kunoh, Makoto Nakanishi, Yoshihiro Kusano, Jun Takada
ACS Omega 5 ( 42 ) 27287 - 27294 2020.10
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Yohsuke Yoshioka, Eiki Yamachika, Makoto Nakanishi, Tadashi Ninomiya, Sho Akashi, Sei Kondo, Norifumi Moritani, Yasuhiro Kobayashi, Tatsuo Fujii, Seiji Iida
Scientific Reports 9 ( 1 ) 8041 2019.12
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青色無機顔料コバルトブルーの色調におよぼすコバルト原料化合物の影響 Reviewed
米田 美佳, 辰己 祐哉, 三野 泰志, 中曽 浩一, 後藤 邦彰, 中西 真, 藤井 達生, 小西 康裕, 野村 俊之
粉体工学会誌 56 ( 8 ) 446 - 451 2019.8
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Solid-state synthesis and characterization of cobalt blue core-shell pigment particles Reviewed
Yoneda Mika, Gotoh Kuniaki, Nakanishi Makoto, Fujii Tatsuo, Konishi Yasuhiro, Nomura Toshiyuki
JOURNAL OF THE AMERICAN CERAMIC SOCIETY 102 ( 6 ) 3468 - 3476 2019.6
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Kunoh Tatsuki, Kusano Yoshihiro, Takeda Minoru, Nakanishi Makoto, Matsumoto Syuji, Suzuki Ichiro, Takano Mikio, Kunoh Hitoshi, Takada Jun
GEOMICROBIOLOGY JOURNAL 36 ( 3 ) 251 - 260 2019.3
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Cathepsin K inhibitor causes changes in crystallinity and crystal structure of newly-formed mandibular bone in rats Reviewed International journal
Y. Yoshioka, E. Yamachika, M. Nakanishi, T. Ninomiya, K. Nakatsuji, Y. Kobayashi, T. Fujii, S. Iida
British Journal of Oral and Maxillofacial Surgery 56 ( 8 ) 732 - 738 2018.10
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Preparation of epitaxial Fe3-xTixO4 solid solution films by sputtering method Reviewed
Kazuhiro Nishimura, Masahiro Kitazono, Makoto Nakanishi, Tatsuo Fujii
Journal of the Japan Society of Powder and Powder Metallurgy 65 ( 9 ) 585 - 588 2018.9
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Molecular alterations of newly formed mandibular bone caused by zoledronate International journal
Y. Yoshioka, E. Yamachika, M. Nakanishi, T. Ninomiya, K. Nakatsuji, M. Matsubara, N. Moritani, Y. Kobayashi, T. Fujii, S. Iida
International Journal of Oral and Maxillofacial Surgery 47 ( 9 ) 1206 - 1213 2018.9
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Molecular alterations of newly formed mandibular bone caused by zoledronate Reviewed
Y. Yoshioka, E. Yamachika, M. Nakanishi, T. Ninomiya, K. Nakatsuji, M. Matsubara, N. Moritani, Y. Kobayashi, T. Fujii, S. Iida
International Journal of Oral and Maxillofacial Surgery 47 ( 9 ) 1206 - 1213 2018.3
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Influence of aluminum source on the color tone of cobalt blue pigment Reviewed
Mika Yoneda, Kuniaki Gotoh, Makoto Nakanishi, Tatsuo Fujii, Toshiyuki Nomura
Powder Technology 323 574 - 580 2018.1
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Growth and charge ordering of epitaxial YbFe2O4 films on sapphire using Fe3O4 buffer layer Reviewed
Tatsuo Fujii, Tomoya Numata, Hiroki Nakahata, Makoto Nakanishi, Jun Kano, Naoshi Ikeda
JAPANESE JOURNAL OF APPLIED PHYSICS 57 ( 1 ) 010305/1 - 010305/3 2018.1
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Development of novel reddish iron oxide based on traditional pigment Bengala: Restoration of Bitchu Fukiya Bengala and advancement to biogenous iron oxide Bengala Reviewed
Jun Takada, Makoto Nakanishi
Zairyo/Journal of the Society of Materials Science, Japan 66 ( 11 ) 799 - 803 2017.11
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Biosorption of metal elements by exopolymer nanofibrils excreted from Leptothrix cells Reviewed
Tatsuki Kunoh, Makoto Nakanishi, Yoshihiro Kusano, Atsushi Itadani, Kota Ando, Syuji Matsumoto, Katsunori Tamura, Hitoshi Kunoh, Jun Takada
WATER RESEARCH 122 139 - 147 2017.10
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Synthesis and magnetic properties of Li,Al-substituted Y-Type ferrite Reviewed
Makoto Nakanishi, Saori Ono, Tatsuo Fujii, Takeyuki Kikuchi
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 64 ( 7 ) 378 - 382 2017.7
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Mossbauer study of zinc-substituted strontium cobalt Z-type hexaferrite Reviewed
Takeyuki Kikuchi, Masafumi Kobune, Makoto Nakanishi, Tatsuo Fujii
CERAMICS INTERNATIONAL 43 S386 - S390 2017
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Bio-inspired 2-line ferrihydrite as a high-capacity and high-rate-capability anode material for lithium-ion batteries Reviewed
Hideki Hashimoto, Masahiro Ukita, Ryo Sakuma, Makoto Nakanishi, Tatsuo Fujii, Nobuyuki Imanishi, Jun Takada
JOURNAL OF POWER SOURCES 328 503 - 509 2016.10
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Structural, magnetic and optical properties of YbFe2O4 films deposited by spin coating Reviewed
Tatsuo Fujii, Naoya Okamura, Hideki Hashimoto, Makoto Nakanishi, Jun Kano, Naoshi Ikeda
AIP ADVANCES 6 ( 8 ) 085213 2016.8
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Structural and Chemical Analysis of the Zirconia-Veneering Ceramic Interface Reviewed
M. Inokoshi, K. Yoshihara, N. Nagaoka, M. Nakanishi, J. De Munck, S. Minakuchi, K. Vanmeensel, F. Zhang, Y. Yoshida, J. Vleugels, I. Naert, B. Van Meerbeek
JOURNAL OF DENTAL RESEARCH 95 ( 1 ) 102 - 109 2016.1
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Lithium Storage Properties of a Bioinspired 2-Line Ferrihydrite: A Silicon-Doped, Nanometric, and Amorphous Iron Oxyhydroxide Reviewed
Hideki Hashimoto, Yuta Nishiyama, Masahiro Ukita, Ryo Sakuma, Makoto Nakanishi, Tatsuo Fujii, Jun Takada
INORGANIC CHEMISTRY 54 ( 15 ) 7593 - 7599 2015.8
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Structural transformations of heat-treated bacterial iron oxide Reviewed
Hideki Hashimoto, Tatsuo Fujii, Shinji Kohara, Koji Nakanishi, Chihiro Yogi, Herwig Peterlik, Makoto Nakanishi, Jun Takada
MATERIALS CHEMISTRY AND PHYSICS 155 67 - 75 2015.4
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High-rate performance of a bacterial iron-oxide electrode material for lithium-ion battery Reviewed
Ryo Sakuma, Hideki Hashimoto, Genki Kobayashi, Tatsuo Fujii, Makoto Nakanishi, Ryoji Kanno, Mikio Takano, Jun Takada
MATERIALS LETTERS 139 414 - 417 2015.1
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Preparation of Yellowish-Red Al-Substituted α-Fe2O3 Powders and Their Thermostability in Color Reviewed
Hideki Hashimoto, Makoto Nakanishi, Hiroshi Asaoka, Tomoaki Maeda, Yoshihiro Kusano, Tatsuo Fujii, Jun Takada
ACS APPLIED MATERIALS & INTERFACES 6 ( 22 ) 20282 - 20289 2014.11
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Mika Yoneda, Mikio Yoshida, Kuniaki Gotoh, Hiromi Tsuji, Makoto Nakanishi, Tatsuo Fujii, Toshiyuki Nomura
Journal of the Society of Powder Technology, Japan 51 ( 9 ) 629 - 634 2014.9
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Mossbauer spectrum of high-pressure synthesized ilmenite-type FeGeO3 Reviewed
T. Fujii, D. Nakatsuka, M. Nakanishi, J. Takada, T. Yoshino
HYPERFINE INTERACTIONS 226 ( 1-3 ) 275 - 280 2014.4
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Nano-micrometer-architectural acidic silica prepared from iron oxide of leptothrix ochracea origin Reviewed
Hideki Hashimoto, Atsushi Itadani, Takayuki Kudoh, Satoshi Fukui, Yasushige Kuroda, Masaharu Seno, Yoshihiro Kusano, Yasunori Ikeda, Yasuhiko Benino, Tokuro Nanba, Makoto Nakanishi, Tatsuo Fujii, Jun Takada
ACS Applied Materials and Interfaces 5 ( 11 ) 5194 - 5200 2013.6
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Nano-micro-architectural composites with acid properties: Magnetic iron oxides/amorphous silicate prepared from iron oxide produced by iron-oxidizing bacterium, Leptothrix ochracea Reviewed
Hideki Hashimoto, Atsushi Itadani, Tatsuo Fujii, Makoto Nakanishi, Hiroshi Asaoka, Yoshihiro Kusano, Yasunori Ikeda, Yasushige Kuroda, Jun Takada
Materials Research Bulletin 48 ( 3 ) 1174 - 1177 2013.3
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High-pressure synthesis, crystal structure and magnetic property of ilmenite-type FeGeO3 Reviewed
Daisuke Nakatsuka, Takashi Yoshino, Jun Kano, Hideki Hashimoto, Makoto Nakanishi, Jun Takada, Tatsuo Fujii
JOURNAL OF SOLID STATE CHEMISTRY 198 520 - 524 2013.2
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Acidic Amorphous Silica Prepared from Iron Oxide of Bacterial Origin Reviewed
Hideki Hashimoto, Atsushi Itadani, Takayuki Kudoh, Yasushige Kuroda, Masaharu Seno, Yoshihiro Kusano, Yasunori Ikeda, Makoto Nakanishi, Tatsuo Fujii, Jun Takada
ACS APPLIED MATERIALS & INTERFACES 5 ( 3 ) 518 - 523 2013.2
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Crystal Structure of β-Fe2O3 and Topotactic Phase Transformation to α-Fe2O3 Reviewed
Teruaki Danno, Daisuke Nakatsuka, Yoshihiro Kusano, Hiroshi Asaoka, Makoto Nakanishi, Tatsuo Fujii, Yasunori Ikeda, Jun Takada
CRYSTAL GROWTH & DESIGN 13 ( 2 ) 770 - 774 2013.2
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TSUJI Hiromi, MURAKAMI Ryu, MIYAZAKI Takashi, HASHIMOTO Hideki, DANNO Teruaki, KUSANO Yoshihiro, KIKUCHI Takahiro, NAKANISHI Makoto, FUJII Tatsuo, TAKADA Jun
J. Jpn. Soc. Powder Powder Metallurgy 60 ( 4 ) 146 - 153 2013
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Synthesis of the Sr3Zn2Fe24O41 Z-type ferriteby polymerizable complex method Reviewed
Takuya Tainaka, Takeyuki Kikuchi, Tatsuya Nakamura, Tohru Yamasaki, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yasunori Ikeda
ELECTROCERAMICS IN JAPAN XV 566 231 - 234 2013
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Synthesis of U-type strontium hexaferrite by polymerizable complex method Reviewed
Takeyuki Kikuchi, Shinji Yoshida, Tatsuya Nakamura, Tohru Yamasaki, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yasunori Ikeda
ELECTROCERAMICS IN JAPAN XV 566 227 - 230 2013
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Crystal and Fine Structural Transformations of Heat-Treated Biogenic Manganese Oxide Reviewed
木村倫康, 橋本英樹, 宮田直幸, 仁科勇太, 草野圭弘, 池田靖訓, 中西真, 藤井達生, IVO Safarik, IVO Safarik, MIRKA Safarikova, 高田潤
粉体および粉末冶金 60 ( 3 ) 92-99 (J-STAGE) - 99 2013
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Preparation, microstructure, and color tone of microtubule material composed of hematite/amorphous-silicate nanocomposite from iron oxide of bacterial origin Reviewed
Hideki Hashimoto, Hiroshi Asaoka, Takuya Nakano, Yoshihiro Kusano, Hiromichi Ishihara, Yasunori Ikeda, Makoto Nakanishi, Tatsuo Fujii, Tadanori Yokoyama, Nanao Horiishi, Tokuro Nanba, Jun Takada
DYES AND PIGMENTS 95 ( 3 ) 639 - 643 2012.12
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Amorphous structure of iron oxide of bacterial origin Reviewed
Hideki Hashimoto, Tatsuo Fujii, Shinji Kohara, Hiroshi Asaoka, Yoshihiro Kusano, Yasunori Ikeda, Makoto Nakanishi, Yasuhiko Benino, Tokuro Nanba, Jun Takada
MATERIALS CHEMISTRY AND PHYSICS 137 ( 2 ) 571 - 575 2012.12
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Synthesis and magnetic properties of magnetite-silicate nanocomposites derived from iron oxide of bacterial origin Reviewed
Hideki Hashimoto, Tatsuo Fujii, Makoto Nakanishi, Yoshihiro Kusano, Yasunori Ikeda, Jun Takada
MATERIALS CHEMISTRY AND PHYSICS 136 ( 2-3 ) 1156 - 1161 2012.10
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Formation Mechanism of a Bixbyite β-Fe_2O_3 Reviewed
DANNO Teruaki, KUSANO Yoshihiro, ASAOKA Hiroshi, NAKANISHI Makoto, FUJII Tatsuo, IKEDA Yasunori, TAKADA Jun
J. Jpn. Soc. Powder Powder Metallurgy 58 ( 9 ) 529 - 534 2012.9
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Formation and superparamagnetic behaviors of LaFeO3 nanoparticles Reviewed
Tatsuo Fujii, Ikkoh Matsusue, Makoto Nakanishi, Jun Takada
HYPERFINE INTERACTIONS 205 ( 1-3 ) 97 - 100 2012.3
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Microstructure and formation conditions of the reddish hi-iro marking on traditional Japanese ceramics Reviewed
Yoshihiro Kusano, Teruaki Danno, Keiko Tokunaga, Nobuaki Kamochi, Hideki Hashimoto, Makoto Nakanishi, Tatsuo Fujii, Minoru Fukuhara, Jun Takada
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 119 ( 1396 ) 942 - 946 2011.12
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Synthesis and anomalous magnetic properties of LaFeO3 nanoparticles by hot soap method Reviewed
Tatsuo Fujii, Ikkoh Matsusue, Daisuke Nakatsuka, Makoto Nakanishi, Jun Takada
MATERIALS CHEMISTRY AND PHYSICS 129 ( 3 ) 805 - 809 2011.10
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Synthesis of single-phase Sr3Co2Fe24O41 Z-type ferrite by polymerizable complex method Reviewed
Takeyuki Kikuchi, Tatsuya Nakamura, Tohru Yamasaki, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yasunori Ikeda
MATERIALS RESEARCH BULLETIN 46 ( 7 ) 1085 - 1087 2011.7
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Synthesis of La-Co Substituted M-type Calcium Hexaferrite by Polymerizable Complex Method Reviewed
T. Kikuchi, T. Nakamura, T. Yamasaki, M. Nakanishi, T. Fujii, J. Takada, Y. Ikeda
3RD INTERNATIONAL CONGRESS ON CERAMICS (ICC3): ADVANCES IN ELECTRO CERAMICS 18 2011
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Magnetic properties of La-Co substituted M-type strontium hexaferrites prepared by polymerizable complex method Reviewed
Takeyuki Kikuchi, Tatsuya Nakamura, Tohru Yamasaki, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yasunori Ikeda
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 322 ( 16 ) 2381 - 2385 2010.8
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Chemical modification of biogenous iron oxide to create an excellent enzyme scaffold Reviewed
Takashi Sakai, Yuki Miyazaki, Ai Murakami, Noriko Sakamoto, Tadashi Ema, Hideki Hashimoto, Mitsuaki Furutani, Makoto Nakanishi, Tatsuo Fujii, Jun Takada
ORGANIC & BIOMOLECULAR CHEMISTRY 8 ( 2 ) 336 - 338 2010
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Formation mechanism of nano-crystalline β-Fe2O3 particles with bixbyite structure and their magnetic properties Reviewed
T. Danno, H. Asaoka, M. Nakanishi, T. Fujii, Y. Ikeda, Y. Kusano, J. Takada
INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009) 200 2010
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Synthesis of Ge substituted ilmenite and their magnetic and electronic properties Reviewed
D. Nakatsuka, T. Fujii, M. Nakanishi, J. Takada
INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009) 200 2010
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Structure and magnetic properties of Fe2O3-FeTiO3 films Reviewed
Tatsuo Fujii, Tatsuya Sugano, Makoto Nakanishi, Jun Takada
INTERNATIONAL CONFERENCE ON MAGNETISM (ICM 2009) 200 072029 2010
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Effects of Rice Straw on the Color and Microstructure of Bizen, a Traditional Japanese Stoneware, as a Function of Oxygen Partial Pressure Reviewed
Yoshihiro Kusano, Akira Doi, Minoru Fukuhara, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yasunori Ikeda, Mikio Takano, Catherine Henrist, Rudi Cloots, Andre Rulmont, Marcel Ausloos
JOURNAL OF THE AMERICAN CERAMIC SOCIETY 92 ( 8 ) 1840 - 1844 2009.8
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Preparation and characterization of (001)- and (110)-oriented 0.6FeTiO(3)center dot 0.4Fe(2)O(3) films for room temperature magnetic semiconductors Reviewed
Yusuke Takada, Makoto Nakanishi, Tatsuo Fujii, Jun Takada
APPLIED PHYSICS LETTERS 92 ( 25 ) 252102 2008.6
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Nitrate Nitrogen Adsorption of Ca-loaded Charcoal from Wood Waste
YOKOYAMA Riei, HAYASHI Satoshi, NAKANISHI Makoto, TAKADA Jun
J. Jpn. Soc. Powder Powder Metallurgy 55 ( 3 ) 177 - 184 2008.3
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NO_3^--N Adsorption Property of Ca-Containing Charcoal
YOKOYAMA Riei, HAYASHI Satoshi, NAKANISHI Makoto, TAKADA Jun
Japan journal of water pollution research 31 ( 1 ) 47 - 52 2008.1
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Structural and magnetic ordering in the VxNb1+yS2 system Reviewed
Makoto Nakanishi, Yukiyasu Matsuno, Tatsuo Fujii, Jun Takada, Kazuyoshi Yoshimura
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS 69 ( 1 ) 49 - 54 2008.1
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Preparation and characterization of epitaxial Fe2-xTixO3 thin films with various Ti concentrations (0.5 < x <1.0) Reviewed
Y. Takada, M. Nakanishi, T. Fujii, J. Takada, Y. Muraoka
J. Appl. Phys. 104 ( 3 ) 033713 2008
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Electronic structure of stoichiometric and non-stoichiometric epitaxial FeTiO3+δ films Reviewed
Tatsuo Fujii, Yusuke Takada, Makoto Nakanishi, Jun Takada, Masahiro Kimura, Hideki Yoshikawa
PROCEEDINGS OF THE 17TH INTERNATIONAL VACUUM CONGRESS/13TH INTERNATIONAL CONFERENCE ON SURFACE SCIENCE/INTERNATIONAL CONFERENCE ON NANOSCIENCE AND TECHNOLOGY 100 012043 2008
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YOKOYAMA Riei, HAYASHI Satoshi, NAKANISHI Makoto, TAKADA Jun
J. Jpn. Soc. Powder Powder Metallurgy 54 ( 10 ) 699 - 704 2007.10
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Systematic study on synthesis and structural, electrical transport and magnetic properties of Pb-substituted Bi-Ca-Co-O misfit-layer cobaltites Reviewed
Yoshiaki Tanaka, Tatsuo Fujii, Makoto Nakanishi, Yoshihiro Kusano, Hideki Hashimoto, Yasunori Ikeda, Jun Takada
SOLID STATE COMMUNICATIONS 141 ( 3 ) 122 - 126 2007.1
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Makoto Nakanishi, Yukiko Uchida, Tatsuo Fujii, Jun Takada, Yoshihiro Kusano, Takeyuki Kikuchi
Tanso 228 ( 228 ) 158 - 162 2007
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Preparation and characterization of FeTiO3-Fe2O3 solid solution system
Miki Yamashita, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Hideki Yoshikawa, Yuuji Saitoh, Shin Ichi Fujimori, Keisuke Kobayashi
Ceramic Transactions 196 505 - 512 2006.12
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The effect of heat treatment temperature on the microstructure and magnetic properties of Ba2Co2Fe12O22 (Co2Y) prepared by sol-gel method Reviewed
Nimai Chand Pramanik, Tatsuo Fujii, Makoto Nakanishi, Jun Takada, Sang Il Seok
MATERIALS LETTERS 60 ( 21-22 ) 2718 - 2722 2006.9
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Effects of pH Control on Preparation of Z-type Hexagonal Ferrite Ba3Co2Fe24O41 by Polymerized Complex Method Reviewed
M. Nakanishi, A. Akiyama, T. Fujii, J. Takada
Ceramic Transactions 196 435 - 440 2006
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Synthesis of Carbon/Fe-Ni-Cu Alloy Composite by Carbonization of Organometallic Polymers and Their Magnetic Properties（共著） Reviewed
Yukiko Uchida, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Akinori Muto, Yusaku Sakata
Ceramic Transactions 195 67 - 74 2006
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Oxidation resistance of Mo coated with Mo(Si,Al)2 layer prepared by dipping into liquid of Al-25 mass% Si alloy Reviewed
S Kunitsugu, N Nishida, T Tomiya, M Nagae, M Nakanishi, T Fujii, J Takada
MATERIALS TRANSACTIONS 46 ( 2 ) 215 - 218 2005.2
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Preparation and characterization of al-substituted hematite and their tone color Reviewed
H Asaoka, M Nakanishi, T Fujii, J Takada, R Murakami
NINTH INTERNATIONAL CONFERENCE ON FERRITES (ICF-9) 69 - 73 2005
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Preparation and characterization of α-Fe2O3/FeTiO3 multi-layered films Reviewed
T Fujii, Y Takada, M Nakanishi, J Takada
NINTH INTERNATIONAL CONFERENCE ON FERRITES (ICF-9) 207 - 213 2005
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Magnetic properties of La-Co substituted M-type Sr ferrite ultra fine powders prepared from the citrate precursors Reviewed
T Kikuchi, T Nakamura, M Nakanishi, T Fujii, J Takada, Y Ikeda, M Nakamura, M Miki
NINTH INTERNATIONAL CONFERENCE ON FERRITES (ICF-9) 75 - 80 2005
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Preparation and magnetic property of Y-type hexagonal ferrite's films Reviewed
K Komatsu, M Nakanishi, T Fujii, J Takkada
NINTH INTERNATIONAL CONFERENCE ON FERRITES (ICF-9) 759 - 762 2005
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Low temperature synthesis of Sr and Ba M-type ferrites by polymerized complex method Reviewed
T. Kikuchi, T. Nakamura, M. Nakanishi, T. Fujii, J. Takada, Y. Ikeda, M. Nakamura, M. Miki
Trans Mater Res Soc Jpn 29 2305 - 2308 2004
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Nonstoichiometry of epitaxial FeTiO3-δ films Reviewed
T Fujii, M Sadai, M Kayano, M Nakanishi, J Takada
MAGNETOELECTRONICS AND MAGNETIC MATERIALS-NOVEL PHENOMENA AND ADVANCED CHARACTERIZATION 746 55 - 60 2003
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Reproduction of Japanese traditional pigment based on iron oxide powders with yellowish red color Reviewed
H Asaoka, M Nakanishi, T Fujii, J Takada, Y Kusano, R Murakami
MATERIALS ISSUES IN ART AND ARCHAEOLOGY VI 712 435 - 440 2002
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Low-temperature growth of c-axis oriented Y-type hexagonal ferrite's films by polymerized complex method
Tatsuo Fujii, Koutarou Komatsu, Makoto Nakanishi, Jun Takada
Materials Research Society Symposium Proceedings 656 43 - 48 2001
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Characteristics of microwave absorption of Ni-Zn-ferrite/SiC hemi-crystallized composites
Makoto Nakanishi, Tomonori Shibuya, Tatsuo Fujii, Jun Takada
Materials Research Society Symposium Proceedings 656 37 - 42 2001
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Anomalous field-induced magnetic transitions in V5X8 (X = S, Se) Reviewed
M Nakanishi, K Yoshimura, K Kosuge, T Goto, T Fujii, J Takada
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 221 ( 3 ) 301 - 306 2000.11
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Electric and magnetic properties of epitaxial Fe2-xTixO3+δ films Reviewed
T Fujii, K Ayama, M Nakanishi, M Sohma, K Kawaguchi, J Takada
MATERIALS SCIENCE OF NOVEL OXIDE-BASED ELECTRONICS 623 191 - 196 2000
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菊池丈幸, 中西真, 長江正寛, 草野圭弘, 藤井達生, 高田潤, 安田仲宏, 村上健
粉体および粉末冶金 46 ( 9 ) 994 - 998 1999.9
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Electrochemical Li Intercalation into the Li-doped Bi-2212 Phase Prepared by Solid State Reaction. Reviewed
中西真, 横山公臣, 菊池丈幸, 藤原正志, 藤井達生, 高田潤, 草野圭弘, 池田靖訓, 武田保雄
粉体および粉末冶金 46 ( 9 ) 990 - 993 1999.9
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FeTiO3-α-Fe2O3 solid solution films prepared by a reactive vapor deposition technique Reviewed
Tatsuo Fujii, Kenji Ayama, Makoto Nakanishi, Jun Takada
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 46 ( 6 ) 643 - 647 1999
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Preparation and properties of a novel electromagnetic wave absorber ferrite/SiC sintered composite Reviewed
T. Jun, M. Nakanishi, M.Yoshino, T. Fujii, Tatsuo, M. Fukuhara, A. Doi, Y. Kusano
Adv. Powder Metall. Part. Mater. 3 11 - 19 1999
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Microscopic studies on Y2Ba4Cu7O15-δ by use of TEM and NQR techniques Reviewed
M Kato, M Nakanishi, T Miyano, T Shimizu, M Kakihana, K Yoshimura, K Kosuge
JOURNAL OF SOLID STATE CHEMISTRY 139 ( 2 ) 266 - 273 1998.9
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Preparation and Magnetic Properties of Fe3O4/MO(M=Ni, Co) Superlattices Reviewed
Tatsuo Fujii, Hiroshi Asaoka, Makoto Nakanishi, Jun Takada
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 45 ( 1 ) 58 - 62 1998
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菊池丈幸, 藤原正志, 長江正寛, 草野圭弘, 中西真, 高田潤
粉体および粉末冶金 45 ( 2 ) 129 - 134 1998
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Effect of Ti Doping on Crystallographic and Magnetic Properties of Epitaxial Hematite Films
FUJII T., AYAMA K., NAKANISHI M., TAKADA J.
Journal of the Magnetics Society of Japan 22 ( 1 ) S1_206 - 208 1998
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Electrochemical lithium intercalation into the Bi-2212 phase Reviewed
M. Fujiwara, M. Nakanishi, Y. Kusano, T. Fujii, J. Takada, Y. Takeda, Y. Ikeda
Physica C: Superconductivity and its Applications 279 ( 3-4 ) 219 - 224 1997.6
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Li doping into the Bi-2212 phase by electrochemical method Reviewed
Masashi Fujiwara, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yoshihiro Kusano, Yasuo Takeda, Yasunori Ikeda, Mikio Takano, Yoshichika Bando
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 44 ( 2 ) 142 - 146 1997
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A cubic AuBe5-type YbCu5 phase with trivalent Yb ion Reviewed
J He, N Tsujii, M Nakanishi, K Yoshimura, K Kosuge
JOURNAL OF ALLOYS AND COMPOUNDS 240 ( 1-2 ) 261 - 265 1996.7
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SUPERCONDUCTING INTERLAYER COUPLING OF NbN/X (X=Ag, CNx) MULTILAYERED FILMS Reviewed
M NAKANISHI, Y TSUCHIYA, N NAKAYAMA, K YOSHIMURA, K KOSUGE, S NAGATA, S YAMAGUCHI
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 253 ( 1-2 ) 33 - 38 1995.10
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COMPOSITIONAL PHASE-SEPARATION IN La2-xBaxCuOy NEAR THE OPTIMUM COMPOSITION FOR SUPERCONDUCTIVITY Reviewed
K YOSHIMURA, H KUBOTA, H TANAKA, Y DATE, M NAKANISHI, T OHMURA, N SAGA, T SAWAMURA, T UEMURA, K KOSUGE
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 62 ( 4 ) 1114 - 1117 1993.4
Books
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意匠性を高める顔料技術
田村勝徳, 中西真, 高田潤（ Role： Contributor , 第3章第1節[3] 鉄細菌を活かした橙色無機顔料の創出）
サイエンス＆テクノロジー株式会社 2021.5 （ ISBN:978-4-86428-242-0 ）
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意匠性を高める顔料技術
田村 勝徳, 中西 真, 高田 潤（ Role： Contributor , 3章1節3 鉄細菌を活かした橙色無機顔料の創出）
サイエンス＆テクノロジー 2021.5 （ ISBN:9784864282420 ）
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磁性材料・部品の最新開発事例と応用技術
中西 真（ Role： Contributor , 第13章第5節 フェライト系電波吸収材料の開発と吸収特性の制御）
情報技術協会 2018.3 （ ISBN:9784861049187 ）
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最新電波吸収材料の開発［事例集］〜最適選定・設計・活用法・評価・測定法〜（共著）
高田 潤, 中西 真（ Role： Contributor , 第3章第1節(1) 電波吸収材料としてのフェライト材料の特性と評価）
技術情報協会 2006.8 （ ISBN:4861041120 ）
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Nanoscale Magnetic Oxides and Bio-World
J. Takada, M. Nakanishi（ Role： Contributor）
2004.10 （ ISBN:9789545801563 ）
MISC
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微生物が水中で作る鞘状酸化鉄由来の赤色顔料 Invited
高田 潤, 田村勝徳, 中西 真
セラミックス 55 ( 10 ) 768 - 771 2020.10
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微生物が生み出す安全で鮮やかな赤色顔料と固体触媒 Invited
中西 真, 押木俊之, 田村勝徳, 高田 潤
塗装工学 54 ( 2 ) 52 - 58 2019.2
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Rapid Synthesis Method of Pigments for Scientific Educational Activities
米田 美佳, 石田 尚之, 寺西 貴志, 中西 真
Ceramics Japan 52 ( 11 ) 759 - 763 2017.11
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鉄酸化細菌を用いたAl固溶鞘状酸化鉄の作製
田村勝徳, 久能樹, 長岡紀幸, 中西真, 押木俊之, 高田潤
セラミックス基礎科学討論会講演要旨集 55 179 2017
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Preprint of the Symposium on Powder Science and Technology 54 18 - 22 2016.9
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The influence of starting materials on the color tone of cobalt blue pigment
Preprint of the Symposium on Powder Science and Technology 53 45 - 48 2015.9
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Microstructural properties of (11(2)over-bar 0)-oriented hematite-ilmenite solid solution films
Tatsuo Fujii, Tomohiro Mino, Shunsuke Kanamaru, Makoto Nakanishi, Hideki Hashimoto, Jun Takada
THIN SOLID FILMS 591 245 - 249 2015
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Characterization of Microtubule Material Consisting of Iron Oxide Nanoparticles Produced by Bacteria
R. Sakuma, H. Hashimoto, Y. Kusano, Y. Ikeda, M. Nakanishi, T. Fujii, M. Takano, J. Takada
Ferrites: Proceedings of ICF 11 S90-S92 2014
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Preparation and Electronic Properties YbFe2O4 Thin Films by Polymerized Complex Method
N. Okamura, T. Fujii, J. Takada, M. Nakanishi, J. Kano, N. Ikeda
Ferrites: Proceedings of ICF 11 S327-S329 2014
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Preparation, Magnetic and Electric Properties of (110)-Oriented Ordered Fe2-xTixO3 Thin Films
T. Matsumoto, N. Suzuki, S. Kanamaru, H. Hashimoto, M. Nakanishi, T. Fujii, J. Takada
Ferrites: Proceedings of ICF 11 S330-S332 2014
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固相反応法により合成したコバルトブルーの色調に及ぼす原料混合時間と焼成温度の影響
米田美佳, 吉田幹生, 後藤邦彰, 辻広美, 中西真, 藤井達生, 野村俊之
粉体工学会誌 51 ( 9 ) 629 - 634 2014
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Attempts of Experimental Class about Ceramics
48 ( 11 ) 889 - 894 2013
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Electromagnetic wave absorbing materials
Makoto Nakanishi, Jun Takada
Chemistry & Education 60 ( 11 ) 484 - 485 2012
-
マンガン酸化細菌が作るマンガン酸化物~その基礎・応用研究~(1)形態的・構造的特徴について
木村倫康, 橋本英樹, 宮田直幸, 古谷充章, 仁科勇太, 中西真, 藤井達生, 高田潤
日本化学会講演予稿集 92nd ( 1 ) 2012
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微生物由来マンガン酸化物のキャラクタリゼーションと固体触媒への応用
木村倫康, 橋本英樹, 仁科勇太, 宮田直幸, 古谷充章, 中西真, 藤井達生, 高田潤
粉体粉末冶金協会講演概要集 2012 2012
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微生物由来マンガン酸化物の機能探索-磁性流体を用いた磁性の付与-
木村倫康, 橋本英樹, SAFARIK Ivo, 仁科勇太, 宮田直幸, 中西真, 藤井達生, 高田潤
粉体粉末冶金協会講演概要集 2012 2012
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20pPSA-51 Electric Properties of Fe_2O_3-FeTiO_3 Solid Solution Films
Mino T., Doi Y., Nakanishi M., Fujii T., Takada J.
Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 576 - 576 2010.3
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22pPSA-1 Structure and magnetic properties of elemental substituted FeTiO_3
Nakatsuka D., Fujii T., Nakanishi M., Takada J.
Meeting abstracts of the Physical Society of Japan 65 ( 1 ) 498 - 498 2010.3
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27pPSA-57 Structure and magnetic properties of Ge substituted FeTiO_3
Nakatsuka D., Fujii T., Nakanishi M., Takada J.
Meeting abstracts of the Physical Society of Japan 64 ( 2 ) 394 - 394 2009.8
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Preparation and Characterization of (001) and (110)-Oriented Fe1.4Ti0.6O3 Films
T. Fujii, T. Sugano, Y. Takada, M. Nakanishi, J. Takada
Mater. Res. Soc. Symp. Proc. 1119 L04-09-1-6 2009
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Synthesis and magnetic properties of AgI intercalated Bi-Ca-Co-O misfit-layer cobalt oxide
Y. Tanaka, T. Fujii, M. Nakanishi, Y. Kusano, Y. Ikeda, J. Takada
Materials Letters 63 ( 2 ) 328 - 330 2009
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Characteristics of hollow microtubes consisting of amorphous iron oxide nanoparticles produced by iron oxidizing bacteria, Leptothrix ochracea (vol 310, pg 2405, 2007)
H. Hashimoto, S. Yokoyama, H. Asaoka, Y. Kusano, Y. Ikeda, M. Seno, J. Takada, T. Fujii, M. Nakanishi, R. Murakami
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 320 ( 18 ) 2310 - 2310 2008.9
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21pPSA-59 Synthesis and properties of Ge substituted FeTiO_3
Nakatsuka D., Fujii T., Nakanishi M., Takada J.
Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 399 - 399 2008.8
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21pPSA-8 Preparation and characterization of (001)- and (110)-oriented Fe_<2-x>Ti_xO_3 films for room temperature magnetic semiconductors
Sugano T., Takada Y., Fujii T., Nakanishi M., Takada J.
Meeting abstracts of the Physical Society of Japan 63 ( 2 ) 386 - 386 2008.8
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Morphological and microstructural study of iron oxide microtubes formed by iron oxidizing bacteria, Leptothrix ochracea
H. Hashimoto, S. Yokoyama, H. Asaoka, Y. Kusano, Y. Ikeda, M. Seno, J. Takada, T. Fujii, M. Nakanishi, R. Murakami
A Global Road Map for Ceramic Materials and Technologies: Forecasting the Future of Ceramics, International Ceramic Federation - 2nd International Congress on Ceramics, ICC 2008, Final Programme 6-P-011-1-6-P-011-4 2008
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Structure, Morphology and Color Tone Properties of theNeodymium Substituted Hematite
Tarequl Islam Bhuiyan, Nakanishi Makoto, Fujii Tatsuo, Takada Jun
Memoirs of the Faculty of Engineering, Okayama University 41 ( 1 ) 93 - 98 2007.1
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Characteristics of hollow microtubes consisting of amorphous iron oxide nanoparticles produced by iron oxidizing bacteria, Leptothrix ochracea
H. Hashimoto, S. Yokoyama, H. Asaoka, Y. Kusano, Y. Ikeda, M. Seno, J. Takada, T. Fujii, M. Nakanishi, R. Murakami
Journal of Magnetism and Magnetic Materials 310 ( Issue 2 SUPPL. PART 3 ) 2405 - 2407 2007
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Synthesis, structures and properties of the cerium doped hematite co-existing with CeO<inf>2</inf>
Tarequl Islam Bhuiyan, Makoto Nakanishi, Yoshihiro Kusano, Tatsuo Fujii, Jun Takada, Yasunori Ikeda
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 54 ( 2 ) 112 - 118 2007
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Preparation and characterization of ilmenite-hematite thin films
Y. Takada, M. Nakanishi, T. Fujii, J. Takada
Journal of Magnetism and Magnetic Materials 310 ( 2 SUPPL. PART 3 ) 2108 - 2110 2007
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Synthesis, morphology and color tone properties of the lanthanum substituted hematite
T. I. Bhuiyan, M. Nakanishi, Y. Kusano, T. Fujii, J. Takada, Y. Ikeda
Materials Letters 61 ( 17 ) 3774 - 3777 2007
-
Iodine intercalation and deintercalation of a Sr-free Bi-based cuprate: Bi<inf>2</inf>(La,Na)<inf>2</inf>CuO
Yoshiaki Tanaka, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yoshihiro Kusano, Yasunori Ikeda
Ceramic Transactions 196 85 - 90 2006
-
Synthesis of Hexagonal Ferrites by Citric Complex Method
Takeyuki Kikuchi, Tatsuya Nakamura, Masamichi Miki, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yasunori Ikeda
Advances in Science and Technology 2006
-
Preparation of Z-type hexagonal ferrite, Co<inf>2</inf>Z, using alkaline mali de method
Akira Sasaki, Makoto Nakanishi, Tatsuo Fujii, Jun Takada
Ceramic Transactions 196 497 - 503 2006
-
Preparation and characterization of epitaxial Fe2-xTi xO3 solid solution films
Fujii, T, Hashimoto, H, Takada, Y, Nakanishi, M, Takada, J
Ceramic Transactions 2006
-
Preparation and magnetic properties of Carbon/Fe-Co alloy composite by polymerized complex method
Yukiko Uchida, Kyoko Oishi, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yoshihiro Kusano, Takeyuki Kikuchi
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 52 ( 8 ) 640 - 645 2005.8
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Preparation and magnetic properties of Carbon/Fe-Co alloy composite by polymerized complex method
Yukiko Uchida, Kyoko Oishi, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yoshihiro Kusano, Takeyuki Kikuchi
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 52 ( 8 ) 640 - 645 2005.8
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The influence of the impurity element and the heat temperature upon the traditional Japanese red color pigment "bengara"
Hiroshi Asaoka, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yoshihiro Kusano, Ryu Murakami
C e Ca 35 ( 2 ) 85 - 91 2005
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Magnetic and electronic properties of Fe<inf>1.2</inf>Ti <inf>0.8</inf>O<inf>3</inf>/Fe<inf>2</inf>O<inf>3</inf> bilayered films
Tatsuo Fujii, Yusuke Takada, Makoto Nakanishi, Jun Takada
INTERMAG ASIA 2005: Digests of the IEEE International Magnetics Conference 728 2005
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Synthesis and characterization of cerium substituted hematite by sol-gel method
Nimai Chand Pramanik, Tarequl Islam Bhuiyan, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Sang Il Seok
Materials Letters 59 ( 28 ) 3783 - 3787 2005
-
Development of Co<inf>1+x</inf>Fe<inf>2-x</inf>O<inf>4</inf> (x=0-0.5) thin films on SiO<inf>2</inf> glass by the sol-gel method and the study of the effect of composition on their magnetic properties
Nimai Chand Pramanik, Tatsuo Fujii, Makoto Nakanishi, Jun Takada
Materials Letters 59 ( 1 ) 88 - 93 2005
-
Development of nanograined hexagonal barium ferrite thin films by sol-gel technique
Nimai Chand Pramanik, Tatsuo Fujii, Makoto Nakanishi, Jun Takada
Materials Letters 59 ( 4 ) 468 - 472 2005
-
Preparation and magnetic properties of the CoFe<inf>2</inf>O<inf>4</inf> thin films on Si substrate by sol-gel technique
Nimai Chand Pramanik, Tatsuo Fujii, Makoto Nakanishi, Jun Takada
Journal of Materials Science 40 ( 16 ) 4169 - 4172 2005
-
Magnetic properties of La-Co substituted M-type Sr-ferrite fine powders prepared by the citrate process
KIKUCHI T., NAKAMURA T., NAKANISHI M., FUJII T., TAKADA J., IKEDA Y., MIKI M.
28 419 - 419 2004.9
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高田 潤, 中西 真, 藤井達生
機械の研究vol.56, no.5, pp.536-542 vol.56, no.5, pp.536-542 ( 5 ) 536 - 542 2004
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Crystalline Control of Bincho Charcoal by using Catalytic Graphitization and Electromagnetic Wave Absorption Characteristics of Derived Carbon（共著）
Yukiko Uchida, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Akinori Muto, Yusaku Sakata, Yoshihiro Kusano, Takeyuki Kikuchi
Transactions of the Materials Research Society of Japan 29 2511 - 2514 2004
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Ilmenite-hematite solid solution films for novel electronic devices
Tatsuo Fujii, Masakazu Kayano, Yusuke Takada, Makoto Nakanishi, Jun Takada
Solid State Ionics 172 ( 1-4 SPEC. ISS. ) 289 - 292 2004
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Effect of Co2+ ion on the magnetic properties of sol-gel cobalt ferrite thin films
Nimai Ch Pramanik, Tatsuo Fujii, Makoto Nakanishi, Jun Takada
Journal of Materials Chemistry 14 ( 22 ) 3328 - 3332 2004
-
Preparation of Y-type hexagonal ferrite's films by polymerized complex method
K. Komatsu, M. Nakanishi, T. Fujii, J. Takada
Journal of Magnetism and Magnetic Materials 272-276 ( SUPPL. 1 ) 2004
-
Preparation and characterization of epitaxial FeTiO<inf>3+λ</inf> films
Tatsuo Fujii, Masakazu Kayano, Yusuke Takada, Makoto Nakanishi, Jim Takada
Journal of Magnetism and Magnetic Materials 272-276 ( III ) 2010 - 2011 2004
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814 吹屋ベンガラのキャラクタリゼーションとその再現(表面改質・色彩評価,一般セッション,第53期学術講演会)
浅岡 裕史, 中西 真, 藤井 達生, 高田 潤
学術講演会講演論文集 53 228 - 228 2004
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807 高周波用Y型六方晶フェライト薄膜の作製と磁気特性(薄膜物性,一般セッション,第53期学術講演会)
小松 幸太郎, 中西 真, 藤井 達生, 高田 潤
学術講演会講演論文集 53 215 - 215 2004
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810 フェライト/SiC複合焼結体の作製と電磁波吸収特性(セラミックスの物性評価,一般セッション,第53期学術講演会)
中西 真, 小倉 和生, 藤井 達生, 高田 潤
学術講演会講演論文集 53 220 - 221 2004
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Electronic States of Iron-Titanium Oxides Analyzed by Photelectron Spectroscopy
Fujii T., Kayano M., Takada Y., Nakanishi M., Takada J., Ito Y., Kimura M., Vlaicu M. A., Yoshikawa H., Fukushima S., Tanaka A.
Meeting abstracts of the Physical Society of Japan 58 ( 2 ) 528 - 528 2003.8
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Electronic States of Epitaxial FeTiO_3 Films
Fujii T., Kayano M., Takada Y., Nakanishi M., Takada H., Oohashi H., Shigeoka N., Ito Y., Kimura M., Vlaicu M. A., Yoshikawa H., Fukushima S., Tanaka A., Yamashita M.
Meeting abstracts of the Physical Society of Japan 58 ( 1 ) 475 - 475 2003.3
-
The influence of the additional element and the heat temperature upon traditional red color pigment
ASAOKA H.
10^<th> International Ceramics Congress International Symposium (CIMTEC 2002), Techna Srl 63 - 68 2003
-
Microstructure and formation mechanism of fire-make pattern on Japanese traditional “BIZEN” earthenware
Y. Kusano, A. Doi, M. Nakanishi, T. Fujii, J. Takada, M. Fukuhara, R. Murakami
Proceedings of 10th International Ceramics Congress, Science for New Technology of Silicate Ceramics 2003
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Characterization and Reproduction of "Fukiya Bengara", Noble Red Color Pigment, by Fe<inf>2</inf>O<inf>3</inf>-Al<inf>2</inf>O<inf>3</inf> System
Hiroshi Asaoka, Yoshihiro Kusano, Makoto Nakanishi, Tatsuo Fujii, Jun Takada
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 50 ( 12 ) 1062 - 1067 2003
-
Phase separation of T' solid solution in the Pr-La-Cu-O system (III)
Ikeda Y, Yamada K, Kusano Y, Nakanishi M, Takada J
Meeting abstracts of the Physical Society of Japan 57 ( 2 ) 480 - 480 2002.8
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24pPSA-24 Phase separation of T' solid solution in the Pr-La-Cu-O system (II )
Ikeda Y., Yamada K., Kusano Y., Nakanishi M., Takada J.
Meeting abstracts of the Physical Society of Japan 57 ( 1 ) 512 - 512 2002.3
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Synthesis and Properties of Pb-Doped Bi-2212 Phase
Y. Kusano, A.Doi, M.Nakanishi, T.Fujii, J.Tadkada, Y.Ikeda, M.Takano
Key Engineering Materials 2002
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プレセラミックス法によるフェライト系複合材料の作製と電波吸収特性
高田潤, 中西真, 藤井達生
日本応用磁気学会誌 2002
-
Exchange coupling and spin-flip transition of CoFe<inf>2</inf>O<inf>4</inf>/α-Fe<inf>2</inf>O<inf>3</inf> bilayered films
Tatsuo Fujii, Takuya Yano, Makoto Nakanishi, Jun Takada
Materials Research Society Symposium - Proceedings 674 2001
-
Low-temperature growth of c-axis-oriented Y-type hexagonal ferrite thin films by the polymeric precursor method
Tatsuo Fujii, Aiko Harano, Makoto Nakanishi, Jun Takada
Journal of Materials Research 16 ( 9 ) 2471 - 2474 2001
-
Introduction of Flux Pining Centers in Bi-based Superconductors by Heavy Ion Irradiation.
高田潤, 菊池丈幸, 中西真, 藤井達生, 長江正寛, 草野圭弘, 池田靖訓, 安田仲宏, 村上健
NIRS-M (Natl Inst Radiol Sci) ( 139 ) 203 - 204 2000.4
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Preparation and absorption characteristics of Ni-Zn ferrite/SiC sintered composites prepared by pre-ceramics method
Makoto Nakanishi, Masaki Yoshino, Tatsuo Fujii, Jun Takada, Minoru Fukuhara
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 47 ( 8 ) 927 - 930 2000
-
Preparation and absorption characteristics of Ni-Zn ferrite/SiC sintered composites prepared by pre-ceramics method
Makoto Nakanishi, Masaki Yoshino, Tatsuo Fujii, Jun Takada, Minoru Fukuhara
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 47 ( 8 ) 927 - 930 2000
-
Preparation of CoFe_2O_4/α-Fe_2O_3 bilayered films by helicon plasma sputtering
YANO T., FUJII T., NAKANISHI M., TAKADA J
23 20 - 20 1999.10
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Introduction of Flux Pining Centers in Bi-based Superconductors by Heavy Ion Irradiation.
高田潤, 菊池丈幸, 中西真, 長江正寛, 草野圭弘, 池田靖訓, 高野幹夫, 安田仲宏, 村上健
NIRS-M (Natl Inst Radiol Sci) ( 133 ) 211 - 212 1999.4
-
Structure and Magnetism of V_XNbS_<2-δ>
MATSUNO Yukiyasu, NAKANISHI Makoto, FUJII Tatsuo, TAKADA Jun
Meeting abstracts of the Physical Society of Japan 53 ( 2 ) 475 - 475 1998.9
-
高田潤, 中西真, 菊池丈幸, 藤井達生, 長田実, 垣花真人
東京工業大学応用セラミックス研究所共同利用研究報告書 1997 74 1998.9
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Lithium Intercalation/Deintercalation of the Bi-2212 Phase by Electrochemical Method
Makoto Nakanishi, Yoshiaki Uwazumi, Masashi Fujiwara, Jun Takada, Yoshihiro Kusano, Yasuo Takeda, Yasunori Ikeda
Journal of the Japan Society of Powder and Powder Metallurgy 45 ( 7 ) 666 - 669 1998
-
Preparation of FeTiO_3-α-Fe_2O_3 solid solution films by reactive evaporation method
FUJII T., AYAMA K., NAKANISHI M., TAKADA J.
21 457 - 457 1997.10
-
28a-PS-82 Magnetic transitions of vanadium chalcogenides II
Nakanishi M., Fujii T., Takada J., Yoshimura K., Kosuge K., Goto T.
Meeting abstracts of the Physical Society of Japan 52 ( 1 ) 424 - 424 1997.3
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Li Doping into the Pb substituted Bi-2212 Phase by Electrochemical Method
Hirofumi Joko, Masashi Fujiwara, Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Yoshihiro Kusano, Yasuo Takeda, Yasunori Ikeda, Mikio Takano, Yoshichika Bando
Journal of the Japan Society of Powder and Powder Metallurgy 44 ( 8 ) 792 - 796 1997
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Phase diagram and physical property of Yb-Cu system. III.
辻井直人, 何軍輝, 中西真, 吉村一良, 小菅こう二
粉体粉末冶金協会講演概要集 1997 1997
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Magnetic transitions of vanadium chalcogenides
Nakanishi M., Fujii T., Takada J., Yoshimura K., Kosuge K., Goto T.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1996 ( 3 ) 107 - 107 1996.9
-
1p-pSA-47 High field magnetization of itinerant antiferromagnet V_5X_8 (X=S,Se)
Nakanishi M., Yoshimura K., Kosuge K., Goto T.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting 51 ( 3 ) 158 - 158 1996.3
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Phase diagram and physical properties of Yb-Cu system. II.
辻井直人, 何軍輝, 中西真, 網田富士嗣, 吉村一良, 小菅こう二
粉体粉末冶金協会講演概要集 1996 1996
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Electronic states of C15b-type Yb compounds around YbCu5.
辻井直人, HE J, 中西真, 網田富士嗣, 吉村一良, 小菅こう二, MICHOR H, HILSCHER G
日本物理学会講演概要集(年会) 51st ( 3 ) 1996
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Microscopic Characterization of Y2Ba4Cu7O15-.DELTA.-NQR and TEM Investigation.
吉村一良, 加藤将樹, 加藤治一, 大村朋彦, 中西真, 宮野敏男, 垣花真人, 小菅こう二
NMR討論会講演要旨集 35th 1996
-
Microscopic structure and superconductivity of Y2Ba4Cu7Oy.
吉村一良, 加藤将樹, 中西真, 加藤治一, 宮野敏男, 小菅こう二, 垣花真人
粉体粉末冶金協会講演概要集 1996 1996
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Itinerant-Electron Magnetism of(Sr-Ca)RuO_3 system
Kiyama T., Kageyama H., Nakanishi M., Yoshimura K., Kosuge K., Goto T., Ikeda Y., Bando Y.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 3 ) 13 - 13 1995.9
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Magnetic properties of BaVS_<3-x>Se_x
Nakanishi M., Yoshimura K., Kosuge K.
Abstracts of the meeting of the Physical Society of Japan. Sectional meeting 1995 ( 3 ) 38 - 38 1995.9
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Magnetic properties of Ru perovskite systems around SrRuO_3
Kiyama T., Nakanishi M., Yoshimura K., Kosuge K., Katori H., Goto T.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting 50 ( 3 ) 10 - 10 1995.3
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Synthesis and physical properties of high-pressure phase CuV_2S_4
Nakanishi M., Kato M., Amita F., Yoshimura K., Kosuge K.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting 50 ( 3 ) 11 - 11 1995.3
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Yb-Cu系の状態図と物性
辻井直人, 何軍輝, 中西真, 網田富士嗣, 吉村一良, 小菅こう二
粉体粉末冶金協会講演概要集 1995 1995
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30p-PSB-36 Temperature and magnetic field dependence of specific heat of V_3X_4, V_5X_8(X=S, Se)
Nakanishi M., Yoshimura K., Kosuge K., Michor H., Perthold W., Dusek C., Holubar T., Hilscher G.
Abstracts of the meeting of the Physical Society of Japan. Annual meeting 49 ( 3 ) 181 - 181 1994.3
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28p-PS-119 On the Relation between Phase Separation and Superconductiviy in the La214 System
Yoshimura K., Kubota H., Tanaka H., Date Y., Nakanishi M., Ohmura T., Saga N., Sawamura T., Uemura T., Kosuge K.
47 ( 3 ) 327 - 327 1992.3
Presentations
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Ni置換Srフェライトの水熱合成と磁気特性
中西真, 泉知甫, 藤井達生, 菊池丈幸
粉体粉末冶金協会2019年度春季大会 2019.6.5
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水熱法によるCo置換M型フェライトの合成と磁気特性（第２報）
中西真, 渡邉公平, 堀江なつみ, 泉知甫, 藤井達生, 菊池丈幸
粉体粉末冶金協会平成29年度秋季大会 2017.11.9
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Al置換Ni系Y型フェライトの合成と磁気特性
中西真, 小野紗織, 狩野旬, 藤井達生, 菊池丈幸
粉体粉末冶金協会平成29年度春季大会 2017.6.1
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水熱法によるCo置換M型フェライトの合成と磁気特性
中西 真, 渡邉公平, 松本修治, 狩野 旬, 藤井達生, 菊池丈幸
粉体粉末冶金協会平成28年度秋季大会 2016.11.9
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R型構造を有するRu酸化物の合成と物性（第2報）
中西真, 藤井達生, 高田潤, 菊池丈幸
粉体粉末冶金協会平成24年度秋季大会 2012.11.21
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Preparation and Magnetism of Lithium-substituted Zn2Y Ferrite
Makoto Nakanishi, Seiya Koyama, Tatsuo Fujii, Jun Takada, Aiko Hida, Hiroshi Yasui
IUMRS International Conference on Electronic Materials 2012 2012.9.24
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R型構造を有するRu酸化物の合成と物性
中西 真, 藤井 達生, 高田 潤
粉体粉末冶金協会平成24年度春季大会 2012.5.24
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Preparation and Microwave Absorption of Y-type Ferrite / SiC Composites
Makoto Nakanishi, Tatsuo Fujii, Jun Takada, Takeyuki Kikuchi
The 28th Japan-Korea International Seminar on Ceramics 2011.11
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電波吸収材としてのY型六方晶フェライト粉末の開発
安井 宏, 日田 愛子, 中西 真, 藤井 達生, 高田 潤
粉体粉末冶金協会平成23年度春季大会 2011.5.31
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Preparation and electromagnetic properties of Y-type hexagonal ferrite/silicon carbide sintered composites
M. Nakanishi, C. Yamaguchi, T. Fujii, J. Takada, T. Kikuchi
2010 International Chemical Congress of Pacific Basin Societies 2010.12
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Preparation and Electromagnetic Properties of Y-type Ferrite Composites
M Nakanishi, C Yamaguchi, T Fujii, J Takada, T Kikuchi
The 3rd International Congress on Ceramics 2010.11.15
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Ｙ型フェライトの２価金属イオン分布と電磁波吸収特性との関係
中性子産業利用推進協議会 平成 25 年度物質科学研究会 2013
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Preparation and Electromagnetic Wave Absorption Properties of Y-type Ferrite/SiC Sintered Composites
10th International Conference and Exhibition of the European Ceramic Society 2007
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微粒子金属を内包した電波吸収パイロポリマー
炭素材料学会２月セミナー 2007
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錯体重合法による炭素/Fe-Ni-Cu合金複合材料の調製
粉体粉末冶金協会平成18年度春季大会 2006
Industrial property rights
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オレンジ色系顔料用酸化鉄及びその製造方法
田村 勝徳, 久能 樹, 中西 真, 高田 潤
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赤色顔料用及び触媒用酸化鉄並びにその製造方法
田村 勝徳, 久能 樹, 長岡 紀幸, 中西 真, 押木 俊之, 高田 潤
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磁性セラミックス及びその製造方法
高田 潤, 橋本 英樹, 藤井 達生, 中西 真
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酸化物の生成能を有する新規微生物
高田 潤, 澤山 道則, 鈴木 智子, 橋本 英樹, 藤井 達生, 中西 真
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有機・無機複合材料及びその製造方法
酒井 貴志, 依馬 正, 高田 潤, 藤井 達生, 中西 真, 橋本 英樹
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固溶系Y型六方晶フェライト材料及び該材料を用いた成型体、電磁波吸収体、及びアンテナ
高田 潤, 藤井 達生, 中西 真, 安井 宏, 赤松 哲也, 行吉 直也, 日田 愛子
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正極活物質およびその利用
高田 潤, 藤井 達生, 中西 真
Awards
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2008.7 備中吹屋ベンガラ再現による新規赤色顔料Al置換酸化鉄の開発
高田 潤、中西 真、寺田 康恒
Research Projects
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Development of a New Synthesis Method Mimicking Iron-oxidizing Bacteria for Highly Chromatic Inorganic Pigments
Grant number：20K21238 2020.07 - 2022.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)
NAKANISHI Makoto
Grant amount：\6370000 （ Direct expense: \4900000 、 Indirect expense：\1470000 ）
Red pigments utilizing iron hydroxide produced by iron-oxidizing bacteria in nature are known to be vivid and highly heat-resistant. Based on this reaction mechanism, we attempted to develop a new synthetic process for the efficient mass production of highly saturated inorganic pigments using organic molecules. By examining the synthesis conditions in detail, we obtained inorganic pigments that exhibit color tones comparable to those of commercial pigments through a new synthesis process that is easy to scale up and suitable for mass production.
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Induced magnetization on non-magnetic nanoparticles by surface structural relaxations
Grant number：26630319 2014.04 - 2017.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research
FUJII Tatsuo, TAKEMURA Daiki, ANDOU Daiki
Grant amount：\3900000 （ Direct expense: \3000000 、 Indirect expense：\900000 ）
In recent years, applications of magnetic nanoparticles in various fields are expected. We found that LaFeO3 nanoparticles having almost no magnetization in bulk form showed large magnetization at low temperatures. Therefore, it should be worth to clarify the mechanism of the induced magnetization systematically to evaluate the relationship between the crystal structure and magnetic properties of LaFeO3 nanoparticles. As a first step, we tried to prepare LaFeO3 nanoparticles with a uniform particle size distribution by using salt-assisted spray pyrolysis. The salt-assisted spray pyrolysis has been expected to synthesize complex oxide nanoparticles with single nanometric sizes.
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Development of functional iron titanium complex oxide films by control of mixed-valence state
Grant number：23350092 2011.04 - 2015.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
FUJII Tatsuo, NAKANISHI Makoto, ICHIKAWA Kazunori, TAKADA Jun
Grant amount：\20150000 （ Direct expense: \15500000 、 Indirect expense：\4650000 ）
In this study, we synthesized a single-phase of various mixed valence oxides including a hematite - ilmenite solid solution system, and surveyed their magnetic and electronic properties. Epitaxial thin films of their oxides were fabricated successfully in order to reveal and control the effects of crystal orientation and a lattice distortion on their structural and charge transfer properties. The morphology, microstructure and electric transport properties of hematite - ilmenite solid solution films were strongly influenced by the crystalline orientation. Not only the structural anisotropy of crystalline solids but also the lattice mismatch between the substrates and films played the important roles in their properties.
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Study on nanometric amorphous iron oxide of bacterial origin as Li-ion battery cathode
Grant number：23360309 2011.04 - 2014.03
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
TAKADA Jun, FUJII Tatsuo, NAKANISHI Makoto, KUSANO Yoshihiro, KANNO Ryouji
Grant amount：\18980000 （ Direct expense: \14600000 、 Indirect expense：\4380000 ）
We studied the discharge-charge properties of Li+ ions of nanometric amorphous iron oxide of bacterial origin for use as Li-ion battery cathode. This material was found to have the unique nanostructure. The iron oxide showed excellent cycle characteristics in a voltage range of 1.5-4.0 V at high current rate. X-ray absorption fine structure measurement revealed that the Fe3+ Fe2+ reaction is predominant in these discharge-charge processes.
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Characterization of biogenous iron oxide and its Li-ion charge/discharge behavior
Grant number：19360300 2007 - 2008
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
TAKADA Jun
Grant amount：\20670000 （ Direct expense: \15900000 、 Indirect expense：\4770000 ）
バクテリア(鉄細菌)が作るチューブ状酸化鉄の特徴を詳細に検討した結果、非常にユニークな酸化鉄材料であることを明らかにした。即ち、直径が約1μmの中空チューブ状の形状で、非晶質構造を有し、3nmの1次粒子から成り、化学組成も特徴ある。さらに、この微生物由来バイオ酸化鉄はLiイオンについて優れた充放電特性を示すことを見出した。
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Development of hexagonal ferrite materials for electronic devices used at high frequency of GHz range on the basis of research on phase diagrams
Grant number：17360326 2005 - 2006
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
TAKADA Jun, FUJII Tatsuo, WADA Osami, NAKANISHI Makoto, KUSANO Yoshihiro
Grant amount：\15400000 （ Direct expense: \15400000 ）
Some of the intrinsic properties of ferroxplaner-type ferrites are still unknown. In this study, preparation conditions, compositional range and electromagnetic properties of ferroxplanar-type ferrite were investigated and the relationships between them were clarified. And the development of novel magnetic thin films and wide-band electromagnetic wave absorbing sintered composites used in GHz range was aimed on the basis of that invesitgations.
First, we have investigated preparation conditons for monophasic ferroxplaner-type ferrites and the phase diagrams of this system at 1000 and 1200 ℃ were constructed on the basis of the results. In this procedure, we have investigated the formation mechanisms of Y-type and Z-type ferrites by X-ray diffraction measurements and proposed the models of them. And we have clarified the relationships between the structures, electromagnetic properties like permeability and conpositions.
Then we have investigated the preparation conditions of highly orientated magnetic thin films of ferroxplaner-type ferrites by polymerized complex method, the effects of trace elements and formation mechanisms. We have also tried to prepare wide-band electromagnetic wave absorbing materials at GHz range by hybridizing with magnetic loss and dielectric loss materials, i.e. Y-type ferrite and silicon carbide. By optimizing the preparation conditions we succeeded to prepare the absorbing materials, which showed enough reflection, less than-20dB, at the frequency range from 3.5 to 6.5 GHz. The relationship between reflection loss and band-width were thought to be trade-off, but these materials satisfy the required performace in both abilities. -
磁性損失材料と誘電損失材料の複合化による広帯域電磁波吸収材料の開発
Grant number：17760571 2005 - 2006
日本学術振興会 科学研究費助成事業 若手研究(B)
中西 真
Grant amount：\2800000 （ Direct expense: \2800000 ）
本研究では、磁性損失材料と誘電損失材料の複合化による広帯域電磁波吸収材料の開発を目的に、本年度は主に複合型吸収体の作製とその特性評価に重点を置き、吸収メカニズムの解明を目指すとともに材料設計の可能性を探った。また、従来とは逆に誘電損失材料中に磁性損失材料が分散する複合材料の作製も引き続き試みた。最後に全体の総括を行った。
1.複合型吸収体の作製と特性評価 Y型フェライトとSiCを組み合わせた複合型吸収体を作製し、マイクロ波吸収特性を評価した。適切な焼結条件とSiC添加量の制御により、従来よりも吸収量が大幅に向上し、吸収帯域も3.5-6.5GHzと広帯域化した。透磁率を低下させることなくSiC添加によって誘電率を増大できたことが広帯域化に寄与していると考えられる。
2.マイクロ波吸収体の設計とその検証 スピネルフェライトとフェロックスプラナ型フェライトの複合化によるマイクロ波吸収体の設計を試みた。実際に作製した試料と設計値との比較を行い、焼結の際の反応が大きく影響を与えることを明らかにした。
3.新規複合材料作製法の検討 錯体重合法を応用した新しい作製法により炭素/合金系複合材料を作製し、その特性を評価した。作製条件を最適化することで材料の微細組織が制御でき、磁気特性が大きく向上することを明らかにした。更に、マイクロ波吸収特性に及ぼす影響を検討した。
4.総括 一連のフェロックスプラナ型フェライトの固溶組成や基本的電磁気特性とその支配因子といった本質の解明を目指し、平衡状態図を作成し、電磁気特性の組成依存性を明らかにした。この知見を基に、作製条件の最適化とSiC添加量の最適化により、帯域幅、吸収量ともに従来より大きく向上した新規複合材料を開発した。また、従来とは逆に誘電損失材料中に磁性損失材料が分散する複合材料の作製も検討した。 -
微生物が常温で作るナノサイズ酸化鉄のキャラクタリゼーションとその応用の試み
Grant number：17651071 2005 - 2006
日本学術振興会 科学研究費助成事業 萌芽研究
高田 潤, 藤井 達生, 中西 真
Grant amount：\3400000 （ Direct expense: \3400000 ）
近年鉄細菌を用いた「バイオ浄水法」は、地下水の浄水法として実際に採用され、環境に優しい浄水法と注目されていて、今後急速に全国に広がると予想されている。このバイオ浄水法では、レプトシリックス鉄細菌が地下水中のFeイオンを体内に取込んで、細菌の体の周りにパイプ状酸化鉄鞘などの無機化合物を常温で生成し、濾過槽上部に褐色沈殿物を形成する。しかし、現在この酸化鉄鞘の詳細が全く不明かつ分離・回収が困難であるため、沈殿物を埋立廃棄しているのが現状であり、バイオ浄水法の利点が十分に活かされていない。
そこで本研究では、先ず、鉄細菌が常温で作るパイプ状鉄細菌鞘酸化鉄やそれを構成する微細な酸化鉄微粒子を詳細に検討し、酸化鉄の種類、化学組成、微細構造を調査した。次に、浄水沈殿物からの分離・回収方法と鞘の増殖条件を検討した。更にパイプ状鉄細菌鞘酸化鉄の特性と再利用を検討した。その結果、欧文誌への論文1件と特許出願1件の成果を得た。
得られた結果を要約すると以下の通りである。
(1)パイプ状酸化鉄鞘は中空円柱状のマイクロチューブの形態を呈し、その内径と外径の平均値はそれぞれ1.1および1.4μm、長さは50〜200μmであることが明らかとなった。鞘の壁の厚さは平均0.15μmと非常に薄い。
(2)このパイプ状酸化鉄の結晶構造は、21-ferrihydriteの構造に似ているが、より結晶性が低いことが判明した。
(3)パイプ状酸化鉄鞘の壁は100nm以下の超微粒子から構成されており、それぞれの微粒子の組はほぼFe:Si:P=80:15:5であることを見出した。
(4)このパイプ状酸化鉄はspin-glass的な磁気特性を示すことが明らかになった。
(5)バイオ浄水沈殿物からの分離・回収方法を確立し、高純度サンプルを得ることに成功した。
(6)このパイプ状酸化鉄鞘を加熱することによって、ヘマタイトへの変化と赤色顔料としての利用の可能性を見出した。 -
Development of new recyclable materials based on iron oxides for nano-devices
Grant number：14350353 2002 - 2004
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
FUJII Tatsuo, TAKADA Jun, NAKANISHI Makoto
Grant amount：\14900000 （ Direct expense: \14900000 ）
To develop new spintronics materials with environment friendly, we prepared well-crystallized epitaxial Fe_<1.2>Ti_<0.8>O_3 films which had the largest magnetization within the hematite (α-Fe_2O_3)-ilmenite (FeTiO_3) solid solution system. The films were prepared by reactive sputtering technique with an FeTi alloy target. The precise control of substrate temperature and oxygen pressure during sputtering was necessary to obtain ferromagnetic films with R^^- symmetry, in which Fe-rich and Ti-rich layers alternately stacked along the c-axis.
By the way it is well known that the exchange coupling between two magnetic layers influence the magnetic properties of adjacent layers. We prepared Fe_<1.2>Ti_<0.8>O_3/Fe_2O_3 bilayered films and measured the magnetic Curie temperature (T_c) of them. In spite of the higher substrate temperature of 550℃, the films had a sharp interface between layers. The T_c of bilayered films was about 220 K, which was a little higher than that (210 K) of Fe_<1.2>Ti_<0.8>O_3 single layered films. The strong magnetic coupling to the antiferromagnetic α-Fe_2O_3 layer, which had the high Neel temperature of 960 K, could increase the T_c of the Fe_<1.2>Ti_<0.8>O_3 layer.
The electronic structures of α-Fe_2O_3-FeTiO_3 are generally considered as the mixed valence states between Fe^<2+> and Fe^<3+> due to the substitution of Fe^<3+> for Ti^<4+>. The nominal valence states of Ti are fixed to 4+. However high-resolution X-ray fluorescence spectra of various titanium oxides suggested that the Ti Kα and Kβ peak profiles of FeTiO_3 were slightly different form those of other Ti^<4+> compounds and were better to assign to have some Ti^<3+> characters. Moreover the valence band spectra of FeTiO_3 by X-ray photoelectron spectroscopy had a small density just below the Fermi edge, probably assigned to the localized Ti 3d electron. -
インテグレーション超高周波デバイス用新規プラナ型フェライト薄膜の開発
Grant number：13025231 2001
日本学術振興会 科学研究費助成事業 特定領域研究(A)
藤井 達生, 中西 真, 高田 潤
Grant amount：\2100000 （ Direct expense: \2100000 ）
電子通信機器の小型化・高性能化にともない、高い周波数帯域で優れた高周波磁気特性を有する磁性薄膜の開発が切望されている。しかし、スピネル型フェライトに代表される従来の磁性材料は、高周波で透磁率が急激に低下し使用できない。我々の研究グループでは、理論的に優れた高周波磁気特性を持つことが期待されるプラナ型フェライトに注目し、その薄膜の作製に世界ではじめて成功した。その特徴は、金属イオンが均一に分散固定される錯体重合法を用いて原料溶液を調製し、コーティング法により薄膜を作製した点である。そこで本研究では、プラナ型フェライト薄膜のグローバルインテグレーションを目標に、1.薄膜の膜質向上(平滑性・クラック等)を目的として、原料溶液組成の検討2.薄膜の焼成温度の低温化を目的として、基板材料の検討を行った。
その結果、平滑かつクラックの無いプラナ型フェライト薄膜の作製のためには、原料溶液の混合比を、金属:クエン酸:エチレングリコール=1:4:12とすること、溶液のpHはpH<1とすること、そして粘度については10mPa・s以下とすることを明らかにした。また、種々の貴金属基板上に成膜した結果、プラナ型フェライト(Y型六方晶フェライト)の結晶化には、一般的に1000℃以上の高温焼成が必要とされるが、Ag基板を用いたときのみ特異的に結晶化温度が低下し、800℃の低温においてプラナ型フェライト薄膜が成長することを見出した。
得られたプラナ型フェライト薄膜の高周波磁気特性を評価し、改善することが今後の課題である。 -
極限腐食環境に対する超耐食性ナイトライド被覆Mo系ハイブリッド材料の創製の試み
Grant number：12875138 2000 - 2001
日本学術振興会 科学研究費助成事業 萌芽的研究
高田 潤, 桑原 秀行, 長江 正寛, 中西 真
Grant amount：\2200000 （ Direct expense: \2200000 ）
1.研究の背景:最近、超臨界水(臨界点の温度:374.0℃、圧力:218.3atm)を用いたダイオキシンなどの難分解性有毒物質の完全分解・無害化、あをいは超臨界アルコール(メタノールの臨界点は温度:239.4℃、圧力:79.9atm)による廃プラスチックのケミカル・リサイクル、さらには沸騰濃硫酸溶液(80%硫酸の沸点:180℃)を用いた木材の分解など極限環境下反応の利用が環境問題解決への新しい技術として、社会的に非常に注目されている。しかし、この極限腐食環境下の装置材料開発は殆どなされておらず、優れた耐食性を示す新しい材料の開発が緊急の課題となっている。一方、本研究グループは、8年前よりMo合金の窒化挙動の研究を進め、極く最近の予備的研究で、Mo窒化物被覆Mo材料が高耐食性を示すことを見出した。
2.研究目的:初年度(平成12年度)は、NH_3ガス中950〜1100℃での窒化処理により形成した二種または三種のMo窒化物が共存する表面皮膜層の構成相とそれらの微細構造を明らかにし、これらが75%沸騰濃硫酸で完全耐食性を示すことを見出した。本年度は、三種のMo窒化物相(MoN(hcp),γ-Mo_2N(fcc),δ-Mo_2N(bct))の各々の物性を明らかにするために、窒化条件を検討し単相の作製を試み、各々の耐食性を検討することを目的とした。
3.結果:(1)独創的な二段階窒化処理によって、上記の三種のMo窒化物の単相材料の作製に世界で初めて成功した。
(2)これら全てのMo窒化物相は75%沸騰濃硫酸溶液(175℃)に対して完全耐食性を示した。
(3)加えて、亜臨界状態のリン酸水溶液に対しても十分完全耐食性を示すことを見出した。 -
Controlled spin-polarized electron transport of oxide magnetic semiconductor films of hematite-ilumenite solid solutions by the exchange coupling
Grant number：11650697 1999 - 2001
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
FUJII Tatsuo, NAKANISHI Makoto, TAKADA Jun
Grant amount：\3500000 （ Direct expense: \3500000 ）
Magnetic semiconductors are one of die promising electronics materials for the next generation, so-called spintronics materials. In this research we proposed a novel technique to control the spin-polarized transport of magnetic semiconductors and tried to realize it. The first subject was to develop thin films of new oxide magnetic semiconductors focused on a hematite-ilumenite solid solution system having a high spin polarization at room temperature. There had been many difficulties to prepare well-defined hematite ilumenite solid solution films having good magnetic semiconductive properties, because they had many controllable factors such as an order-disorder transition and Fe^<2+>/Fe^<3+> mixed valence states, etc. We found optimized preparation conditions for the solid solution films by helicon sputtering to control remanent oxygen pressure and substrate temperature precisely. The films showed magnetic semiconductive properties such as magnetoresistance at room temperature. The second subject was to control magnetic structures of ferromagnetic layers by means of a spin-flip transition of antiferromagnetic layers. Only epitaxial hematite films showed a unique spin-flip transition. We prepared hematite/spinel ferrite bilayered films by helicon sputtering and surveyed magnetic properties around the spin-flip transition. The spin-flip transition in a hematite layer disappeared because of a large in-plane magnetic anisotropy of a spinel ferrite layer. We first found the 90° exchange coupling between oxide magnetic layers. Unfortunately we could not realize the proposing spin control technique, but we could obtain huge results concerning preparation techniques for well-defined iron oxide films and their structural, magnetic and electronic properties.
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非平衝相としての電子キャリア型Bi系酸化物超伝導体の合成の試み
Grant number：11740400 1999 - 2000
日本学術振興会 科学研究費助成事業 奨励研究(A)
中西 真
Grant amount：\900000 （ Direct expense: \900000 ）
従来は頂点酸素の存在しない系でのみ可能とされてきた電子キャリア型超伝導体について,新たに頂点酸素の存在する系で非平衡相としての合成を目指し,Bi系酸化物高温超伝導体を中心にいくつかの系について,電気化学反応を用いたLiのインターカレーションと酸素ゲッターアニールによる酸素量制御の2つの手法を検討し,以下の点を明らかにした。
1.Bi-2212相を中心として,Bi-2201,またBi系以外のLa214,Nd214などの系についても2つの手法の適用を検討してきたが,本研究で用いた反応系では電子キャリアを有するまでには至らなかった。La214系やNd214系と比較して,Bi系は多量のLiの導入は可能であったが,Cuの平均価数は最も低いものでも2以下にはならないことが判明した。
2.電気化学反応によるLiのインタカレーションでは,これまで結晶構造中のLiの占有サイトに関しては不明であった。電気化学反応と固相反応を組み合わせてLi導入による構造・物性の変化を検討した結果,両反応で結晶構造中のLiの占有サイトが異なることを示唆する結果を得た。
3.Bi-2212相にLiを過剰に導入し,超伝導性を示さなくなった領域の詳細についてはこれまで不明のままであった。Cuの平均価数評価の結果からはホールの減少により反強磁性絶縁体へと変化したと推測していたが,反応に伴う結晶性の低下の影響やCUO_2面への置換等の可能性も否定できなかった。今回NMR測定により反強磁性磁気共鳴が観測され,ホール濃度の減少による反強磁性秩序の形成が超伝導性の消失の原因であることを明らかにした。
結果としては,電子キャリア型超伝導体の合成には至らなかったが,電気化学反応によるホールキャリア型超伝導体から反強磁性絶縁相までの変化とLi導入の構造・物性に対する影響について,詳細を明らかにした。 -
Development of Novel Electromagnetic-Wave-Absorber of SiC-Ferrite Hybrid Materials
Grant number：10450250 1998 - 1999
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
TAKADA Jun, TOMII Yoichi, NAKANISHI Makoto, FUJII Tatsuo, YAMAMOTO Shigehisa
Grant amount：\13700000 （ Direct expense: \13700000 ）
First, We firmed the experimental technique and evaluation of the electromagnetic properties concerning with wave-absorption by using an network analyzer for frequency range from 100MHz to 10GHz. Next two different types of novel sintered composites of Ni-Zn ferrite SiC were first succeeded to prepare as an electromagnetic-wave-absorber through a soft chemical technique and subsequent tow different manners of sintering : a two-step sintering and an one-step sintering. Amorphous SiC particles with an average diameter of approximately 30 μm dispersed uniformly in Ni-Zn spinel ferrite matrix. In the two-step-sintering method, the density of the composite decreased continuously as the amount of SiC increased. The absorption characteristics of the sintered composite were found to depend upon the amount of SiC particles. The center frequency of the absorption shifted toward higher frequency around 2GHz. Furthermore in the one-step-sintering method, we first succeeded another new electromagnetic-wave-absorber having interesting wave-absorption properties with the two different center frequencies of about 800MGz and 8.6GHz.
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Bi系高温超伝導酸化物のLiのインターカレーションと二次電池正極材への応用の試み
Grant number：09875172 1997 - 1998
日本学術振興会 科学研究費助成事業 萌芽的研究
高田 潤, 武田 保雄, 中西 真, 藤井 達生
Grant amount：\1900000 （ Direct expense: \1900000 ）
Bi系高温超伝導酸化物(Bi-2212相など)は層状構造を有する化合物であり、これまで電極反応によるLiのインターカレーションの可能性が期待されていたが、現在まで殆ど報告例がない。
本研究は、Bi-2212相へ電気化学的にLiを導入することを試み、得られたBi-2212相の超伝導特性、構造及び酸素量と構成イオンの価数変化を明らかにするとともに、固相反応法によるLi導入の結果と比較検討することにより、Liのインタカレーションの特徴を明らかにし、更にLiディインターカレーションを試みることによって、Bi-2212相がLi二次電池の正極材として応用できる可能性を検討することを目的とした。得られた結果を要約すると以下の通りである。
1. 電気化学的手法を用いれば、LiをBi-2212相に常温・常圧でインターカレートすることが可能であり、Li量の制御は極めて容易であることを明らかにした。
2. Liを電気化学的に導入したBi-2212相の超伝導特性Toは、Li量によって大巾に変化することを初めて見い出した。すなわち、少量のLi導入でTcは85Kから93Kまで上昇した後、急激に低下し、X≧0.3(Li_X Bi_2Sr_<1.6> Ca_<1.5> Cu_2O_zの表記に対して)のLi量で非超伝導体となる。
3. 電気化学的Li導入では固相反応の場合とは全く異なり、酸素量は全く変化せず、Biの平均価数が減少する結果、Cuの平均価数がX≧0.3.で+2.0まで減少し、これがTcの著しい変化の原因であることを明らかにした。
4.予め導入したLiは電気化学的な逆反応(放電反応)によって、Bi-2212相より放出できる、すなわちディインターカレーションが可能であることを初めて見い出した。このディインターカレーションによって、Bi-2212相の構造、超伝導特性、酸素量とBiとCuの平均価数は可逆的に変化することを明らかにした。
5. 以上の結果より、Bi-2212相へのLi二次電池の正極材への応用の可能性は極めて高いことを示した。 -
Preparation and Properties of New Mo-based Alloys Strengthened by Dispersion of Nano-scale Nitride Superfine Particles
Grant number：08455311 1996 - 1997
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
TAKADA Jun, NAKANISHI Makoto, FUJII Tatsuo, HIRAOKA Yutaka
Grant amount：\7400000 （ Direct expense: \7400000 ）
Mo alloys, which are known to be one of high melgin-temperature metals, are used as high-temperature materials such as heaters, trays for heat-treatments and a X-ray target. Further wide use requires high strengthening of the alloys.
The present research aims to harden a Mo-nitride surface layr formed by nitriding and also to strengthen the alloy by precipitation of very fine TiN particles dispersed in Mo matrix through preferred nitriding of dilute Mo-Ti alloys. Especially on the basis of basic and systematic investigations we tried to develop a new Mo-based composities in which a great number of nano-scale TiN superfine particles disperse through nitriding at much lower temperatures thatn those so far. As a result, it is quite lucky for us to succeed the development of a new Mo-based composite material having remarkably higher strength in comparison with any materials used at present.
For Mo-0.5 and 1.0wt% alloys and pure Mo nitrided in a NH_3 gas at 1100ﾟC which is much lower than 1300-1500ﾟC in previous works, nitriding behavior, hardness profiles on cross sections of nitrided specimens, and microstructure and crystallographic relationship of fine Ti-nitride particles in the Mo matrix were discussed. Main results are summarized below.
(1) The growth mechanism of the Mo-nitride surface layr was made clear. A maximum hardness was found to reach Hv=1800. Furthermore, the surface layr was found to consist of two different sublayrs : a gamma-Mo_2N sublayr near the specimen surface and a beta-Mo_2N sublayr beneath the gamma-Mo_2N layr. Each sublayr has a different twin. In particular, the formation of a new type of microtwin was found in the beta-Mo_2N sublayr.
(2) In nitrided Mo-Ti alloys an internal nitriding layr having high strength was formed beneath the Mo_2 surface layr. The formation of the internal nitriding layr was not observed in pure Mo. We attained markedly high hardness of Hv=1000, which is twice a maximum hardness of Hv=500 reported in Mo alloys so far. Moreover, we found first in the world that the nitriding at the very low temperature of 1100ﾟC brought the precipitation of nano-scale TiN superfine particles with a thickness of about 0.45nm (=1 unit length of TiN) and a diameter of 2-4nm. The superfine particles formed were found to have a special crystallographic-relationship and to give the great increase in strength.
Class subject in charge
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Introduction of Safety and Health （2025academic year） 1st semester - 月5～6
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Seminar in Advanced Chemistry （2025academic year） Other - その他
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Advanced Study （2025academic year） Other - その他
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Introduction of Safety and Health （2024academic year） Fourth semester - 金5～6
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Seminar on Applied Chemistry 1 （2024academic year） Prophase - その他
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Seminar on Applied Chemistry 2 （2024academic year） Late - その他
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Research Works for Master Thesis on Applied Chemistry （2024academic year） Year-round - その他
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Seminar in Advanced Chemistry （2024academic year） Other - その他
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Advanced Study （2024academic year） Other - その他
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Introduction of Safety and Health （2023academic year） Fourth semester - 金5～6
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Introduction of Safety and Health （2022academic year） Fourth semester - 金5～6
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Introduction of Safety and Health （2021academic year） Fourth semester - 金5～6