Updated on 2025/09/30

写真a

 
KANO Jun
 
Organization
Faculty of Environmental, Life, Natural Science and Technology Associate Professor
Position
Associate Professor
Contact information
メールアドレス
External link

Degree

  • 博士(理学) ( 北海道大学 )

Research Interests

  • catalysis

  • ferroelectrics

  • semiconducting property

  • electronic structure

Research Areas

  • Nanotechnology/Materials / Thin film/surface and interfacial physical properties

  • Natural Science / Semiconductors, optical properties of condensed matter and atomic physics  / dielectrics

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Catalyst and resource chemical process

  • Nanotechnology/Materials / Inorganic compounds and inorganic materials chemistry

Education

  • Hokkaido University   大学院理学研究科   物理学専攻

    1999.4 - 2004.3

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  • Hokkaido University   理学部   数学科

    1995.4 - 1999.3

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  • Taki senior high school    

    1991.4 - 1994.3

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Research History

  • CentraleSupélec   研究員

    2023.6

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    Country:France

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  • CentraleSupélec   Researcher

    2017.4 - 2018.3

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    Country:France

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  • Okayama University   Department of applied chemistry and biotechnology   Associate Professor

    2014.4

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  • JST   PRESTO Researcher

    2013.10 - 2017.3

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  • Okayama University   Department of Physics   Lecturer

    2010.4 - 2014.3

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  • University of Tsukuba   Graduate School of Pure and Applied Sciences   Assistant Professor

    2006.4 - 2010.3

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  • University of Tsukuba   Graduate School of Pure and Applied Sciences   Research Assistant

    2004.4 - 2006.3

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Professional Memberships

Committee Memberships

  • The 14th Japan-Korea Conference on Ferroelectricity (JKC-FE14)   Organizing Committee  

    2024.5 - 2024.8   

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    Committee type:Academic society

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  • 日本物理学会   領域10誘電体分科運営委員  

    2021.4 - 2022.3   

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    Committee type:Academic society

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  • 15th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity (RCBJSF)2020   STEERING COMMITTIEE CHAIRPERSON  

    2019.6   

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    Committee type:Academic society

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  • International Microprocesses and Nanotechnology Conference (MNC)   Program committee of 2-4: Inorganic Nanomaterials  

    2018.4   

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    Committee type:Academic society

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  • 日本MRS   MRS-Jニュース編集委員  

    2015.6   

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    Committee type:Academic society

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  • Joint RCBJSF-IWRF Conferences   Program Committees  

    2015.6 - 2016.6   

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    Committee type:Academic society

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  • 日本物理学会   領域10誘電体分科世話人  

    2008.5 - 2009.4   

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    Committee type:Academic society

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Papers

  • Ferroelectric Skewed Electronic Band Structure―New Way of Ferroic Semiconductor Invited Reviewed

    Jun Kano, Norihiro Oshime, Eiji Ikenaga, Shintaro Yasui

    77 ( 7 )   469 - 474   2022.7

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    Authorship:Lead author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)  

    CiNii Books

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  • High valence states of Pd supported on ferroelectric BaTiO3 driven by electric polarization Reviewed

    Tasuku Yoshida, Jun Kano, Masaichiro Mizumaki, Yusuke Tamenori, Kiyofumi Nitta, Kazuo Kato, Satoshi Hinokuma, Norihiro Oshime, Satoshi Hirose, Hitoshi Mikami, Naoshi Ikeda, Tatsuo Fujii, Yuta Nishina, Tomoko Okubo

    Applied Physics Letters   119 ( 9 )   092904 - 092904   2021.8

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/5.0066289

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  • Direct observation of skewed band structure induced by spontaneous polarization on ferroelectric BaTiO3 Invited Reviewed

    押目典宏, 狩野旬

    放射光   34 ( 4 )   225 - 234   2021.7

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    Authorship:Last author   Language:Japanese  

    J-GLOBAL

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  • Electronic Structure of Ferroelectrics-Skewed Band Structure Induced by the Depolarizing Field- Invited Reviewed

    狩野旬, 押目典宏, 池永英司, 安井伸太郎, 日隈聡士, 保井晃

    セラミックス   56 ( 7 )   463 - 466   2021.7

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    Authorship:Lead author, Corresponding author   Language:Japanese  

    J-GLOBAL

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  • Light reflectance and photoelectron yield spectroscopy enable acceptor level measurement in p-type Ba1-xTiO3 semiconductor Reviewed

    Saya Fujii, Jun Kano, Norihiro Oshime, Tohru Higuchi, Yuta Nishina, Tatsuo Fujii, Naoshi Ikeda, Hiromi Ota

    JOURNAL OF APPLIED PHYSICS   129 ( 8 )   2021.2

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/5.0033761

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  • Skewed electronic band structure induced by electric polarization in ferroelectric BaTiO<inf>3</inf> Reviewed

    Norihiro Oshime, Jun Kano, Eiji Ikenaga, Shintaro Yasui, Yosuke Hamasaki, Sou Yasuhara, Satoshi Hinokuma, Naoshi Ikeda, Pierre Eymeric Janolin, Jean Michel Kiat, Mitsuru Itoh, Takayoshi Yokoya, Tatsuo Fujii, Akira Yasui, Hitoshi Osawa

    Scientific Reports   10 ( 1 )   2020.12

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    Authorship:Corresponding author   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41598-020-67651-w

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  • 強誘電性電荷揺らぎ を利用した触媒設計 Invited Reviewed

    狩野旬

    セラミックス   48 ( 7 )   525 - 531   2013.7

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  • Pure lead nanoparticles with stable metallic surfaces, on perovskite lead strontium titanate particles Reviewed

    Jun Kano, Tokushi Kizuka, Fumihito Shikanai, Seiji Kojima

    NANOTECHNOLOGY   20 ( 29 )   2009.7

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/0957-4484/20/29/295704

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  • A gradational system for ferroelectric nanosized (Pb0.7Sr0.3)TiO3 particles Reviewed

    Fumihito Shikanai, Jun Kano, Hiroshi Sawa, Fan Zhang, Tomoaki Karaki, Masatoshi Adachi, Je-Geun Park, Seiji Kojima, Susumu Ikeda, Takashi Kamiyama

    JOURNAL OF PHYSICS-CONDENSED MATTER   21 ( 2 )   2009.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1088/0953-8984/21/2/025903

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  • Synthesis of Carbon Nanowalls using Plasma-Irradiated Solid Carbon and Absorption of Cs in Water Reviewed

    Yukimasa Fukada, Yumito Aoyagi, Misaki Yokoyama, Yoichi Horibe, Jun Kano, Miyu Kaneda, Tatsuo Fujii, Akitaka Yoshigoe, Masaaki Kobata, Tatsuo Fukuda, Kenji Yoshii, Naoshi Ikeda

    Journal of Electronic Materials   54 ( 1 )   686 - 692   2024.11

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s11664-024-11586-9

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    Other Link: https://link.springer.com/article/10.1007/s11664-024-11586-9/fulltext.html

  • Influence of Pt-loading on the energy band gap and gas sensing of titanium perovskite Reviewed

    Zamaswazi P. Tshabalala, Jun Kano, Hendrik C. Swart, David E. Motaung

    Physica B: Condensed Matter   676   415687 - 415687   2024.3

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.physb.2024.415687

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  • Self-growth of silver tree-like fractal structures and their surface-enhanced Raman application Invited Reviewed

    Nobuyuki Takeyasu, Jun Kano, Takahiro Ohkubo, Toshihiko Kiwa, Qingyuan Ma, Satoru Shoji

    Photonics NEWS   9 ( 2 )   83 - 87   2023.12

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  • Coating silver tree‐like fractal structure with silica layer for inhibiting chemical reactions of analytes in surface‐enhanced Raman scattering Reviewed

    Hiroya Watanabe, Yurin Hishii, Kanna Kishimoto, Kohei Nogami, Qingyuan Ma, Tomoya Niki, Tomoki Kotani, Toshihiko Kiwa, Satoru Shoji, Takahiro Ohkubo, Jun Kano, Nobuyuki Takeyasu

    physica status solidi (a)   2023.8

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    Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    Silica coating is performed onto silver tree‐like fractal structures, which are self‐grown in a solution, through a wet process using tetraethyl orthosilicate. Surface‐enhanced Raman scattering (SERS) of para‐aminothiophenol (p‐ATP) is measured on the silver tree‐like fractal structures with/without silica layer at the excitation wavelength of 532 nm. p‐ATP is chemically transformed into dimercaptoazobenzene (DMAB) on the non‐coated silver tree‐like fractal structures, where DMAB peaks are clearly observed, during the SERS measurements. The DMAB peaks decrease/disappear on the silica‐coated ones although the p‐ATP peaks were observed. The results indicate that the chemical transformation is inhibited on the silica‐coated ones. The sensitivity is decreased by half compared to the non‐coated silver tree‐like fractal structures, where the lower detection limit is estimated to be ∽2×10‐5 mol/L for p‐ATP. The silica coating is advantageous for inhibiting chemical transformations of analytes, enabling identification/estimation of chemicals in unknown sample with SERS similarly to conventional Raman spectroscopy.

    This article is protected by copyright. All rights reserved.

    DOI: 10.1002/pssa.202300085

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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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    Publishing type:Research paper (scientific journal)   Publisher:AIP Publishing  

    Millimeter wave absorption exceeding 70 GHz has been performed in a Co-substituted Ca–La magnetoplumbite (M-type) ferrite. A polymerized complex method was used to increase the substitution of La and Co ions in the M-type ferrite. The increase in the magnetic anisotropy field combined with the remaining significant saturation magnetization results in good magnetic resonance absorption in the millimeter range of 70–100 GHz. Above 70 GHz, good millimeter wave absorption of more than −20 dB was achieved in 0.25 mm thickness plates of Ca0.46La0.54Fe11Co0.28O19-η and Ca0.42La0.58Fe11Co0.58O19-η. Highly Co-substituted Ca–La M-type ferrites may, thus, be promising candidates for magnetic absorption materials operating in frequencies of up to 100 GHz.

    DOI: 10.1063/5.0133578

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  • Direct measurement of electrocaloric effect based on multi-harmonic lock-in thermography Reviewed

    Ryo Iguchi, Daisuke Fukuda, Jun Kano, Takashi Teranishi, Ken-ichi Uchida

    Applied Physics Letters   122 ( 8 )   2023.2

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    Publishing type:Research paper (scientific journal)   Publisher:AIP Publishing  

    We report on a direct measurement method for electrocaloric effects, the heating/cooling upon application/removal of an electric field in dielectric materials, based on a lock-in thermography technique. By use of sinusoidal excitation and multi-harmonic detection, the actual temperature change can be measured by a single measurement in the frequency domain even when the electrocaloric effect shows a nonlinear response to the excitation field. We demonstrated the method by measuring the temperature dependence of the electric-field-induced temperature change in two Sr-doped BaTiO3 systems with different ferroelectric-paraelectric phase transition temperatures, where we introduce the procedure for extracting the pure electrocaloric contribution free from heat losses and Joule heating due to leakage currents. This method can be used irrespective of the type of dielectric material and enables simultaneous estimation of the polarization change and power dissipation during the application of an electric field, making it a convenient imaging measurement method for the electrocaloric effect.

    DOI: 10.1063/5.0137686

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  • DNN-based identification for cell differentiation processes under an electronic field stimulation -the second report-

    Rin Fukui, Yoshitaka Yamamoto, Jun Kano, Keiko Sakai

    127   08   2022.11

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    DOI: 10.11517/jsaikbs.127.0_08

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  • Hot Electron Extraction in SWCNT/TiO2 for Photocatalytic H2 Evolution from Water Reviewed

    Masahiro Yamagami, Tomoyuki Tajima, Zihao Zhang, Jun Kano, Ki-ichi Yashima, Takana Matsubayashi, Huyen Khanh Nguyen, Naoto Nishiyama, Tomoya Hayashi, Yutaka Takaguchi

    Nanomaterials   12 ( 21 )   3826 - 3826   2022.10

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    Single-walled carbon nanotube (SWCNT)/TiO2 hybrids were synthesized using 1,10-bis(decyloxy)decane-core PAMAM dendrimer as a molecular glue. Upon photoirradiation of a water dispersion of SWCNT/TiO2 hybrids with visible light (λ &gt; 422 nm), the hydrogen evolution reaction proceeded at a rate of 0.95 mmol/h·g in the presence of a sacrificial agent (1-benzyl-1,4-dihydronicotinamide, BNAH). External quantum yields (EQYs) of the hydrogen production reaction photosensitized by (6,5), (7,5), and (8,3) tubes were estimated to be 5.5%, 3.6%, and 2.2%, respectively, using monochromatic lights corresponding to their E22 absorptions (570 nm, 650 nm, and 680 nm). This order of EQYs (i.e., (6,5) &gt; (7,5) &gt; (8,3)SWCNTs) exhibited the dependence on the C2 energy level of SWCNT for EQY and proved the hot electron extraction pathway.

    DOI: 10.3390/nano12213826

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  • Self-growth of silver tree-like fractal structures with different geometries Reviewed

    Kohei Nogami, Kanna Kishimoto, Yuki Hashimoto, Hiroya Watanabe, Yurin Hishii, Qingyuan Ma, Tomoya Niki, Tomoki Kotani, Toshihiko Kiwa, Satoru Shoji, Takahiro Ohkubo, Jun Kano, Nobuyuki Takeyasu

    Applied Physics A   128 ( 10 )   860   2022.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1007/s00339-022-05976-1

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    Other Link: https://link.springer.com/article/10.1007/s00339-022-05976-1/fulltext.html

  • Towards an DNN-based identification for cell differentiation processes under an electronic field stimulation

    Rin Fukui, Masato Nakayama, Yoshitaka Yamamoto, Jun Kano, Keiko Sakai, Minami Taga, Tetsuya Takeda, Hisao Moriya, Nobuyuki Takeyasu

    125   07   2022.3

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    DOI: 10.11517/jsaikbs.125.0_07

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  • Single domain growth and charge ordering of epitaxial YbFe2O4 films Reviewed

    Takumi Sakagami, Reika Ota, Jun Kano, Naoshi Ikeda, Tatsuo Fujii

    CRYSTENGCOMM   2021.8

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    DOI: 10.1039/d1ce00834j

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  • Skewing of electronic band along the direction of electric polarization in ferroelectrics Invited Reviewed

    Jun Kano, Norihiro Oshime

    SPring-8/SACLA Research Frontiers 2020   58 - 59   2021.8

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  • Surface Electron-Ion Mixed Conduction of BaTiO3-delta Thin Film with Oxygen Vacancies Reviewed

    Tomoasa Takada, Takeshi Fujita, Takehiro Imagawa, Emi Yamamoto, Jun Kano, Daisuke Shiga, Koji Horiba, Hiroshi Kumigashira, Tohru Higuchi

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   90 ( 1 )   2021.1

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    DOI: 10.7566/JPSJ.90.014707

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  • Valence control of charge and orbital frustrated system YbFe<inf>2</inf>O<inf>4</inf> with electrochemical Li+ intercalation Reviewed

    S. Murase, Y. Yoshikawa, K. Fujiwara, Y. Fukada, T. Teranishi, J. Kano, T. Fujii, Y. Inada, M. Katayama, K. Yoshii, T. Tsuji, D. Matsumura, N. Ikeda

    Journal of Physics and Chemistry of Solids   2021

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    DOI: 10.1016/j.jpcs.2021.110468

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  • Dehydrogenative Coupling of Toluene Promoted by Multi-Walled Carbon Nanotubes Reviewed

    Soliman I. El-Hout, Yang Zhou, Jun Kano, Yoshiaki Uchida, Yuta Nishina

    CATALYSIS LETTERS   150 ( 1 )   256 - 262   2020.1

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    DOI: 10.1007/s10562-019-02951-z

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  • Cuticle network and orientation preference of photonic crystals in the scales of the weevil Lamprocyphus augustus Reviewed

    R. Ebihara, H. Hashimoto, J. Kano, T. Fujii, S. Yoshioka

    Journal of The Royal Society Interface   15 ( 145 )   20180360 - 20180360   2018.8

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    Publishing type:Research paper (scientific journal)   Publisher:The Royal Society  

    This paper reports the structural and optical investigations of the structural colour of the weevil
    <italic>Lamprocyphus</italic>
    <italic>augustus</italic>
    . The photonic crystal structure within the weevil's scales was investigated using sequential focused ion-beam milling and scanning electron microscopy imaging. We carefully analysed the reconstructed three-dimensional structure to determine the unit cell of the photonic crystal. It was found that the cuticle network of the cubic unit cell perfectly matches the previously reported diamond-based network. However, different results were obtained for the crystal orientations of the small crystal domains that comprise the entire photonic crystal structure in the scales:
    <monospace>&lt;111&gt;</monospace>
    directions are highly preferred along the surface normal of the scale. This finding explains the fact that the scale is almost uniformly coloured despite the multi-domain structure. It is confirmed experimentally and theoretically that the wavelength range of the reflection band corresponds to the gap of the photonic band.

    DOI: 10.1098/rsif.2018.0360

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    Other Link: https://royalsocietypublishing.org/doi/full-xml/10.1098/rsif.2018.0360

  • Synthesis of nano-crystalline LiNbO3-decorated LiCoO2 and resulting high-rate capabilities Reviewed

    Takashi Teranishi, Masahiro Inohara, Jun Kano, Hidetaka Hayashi, Akira Kishimoto, Koji Yoda, Hidefumi Motobayashi, Yuzo Tasaki

    Solid State Ionics   314   57 - 60   2018.1

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    DOI: 10.1016/j.ssi.2017.11.020

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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 )   2018.1

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    DOI: 10.7567/JJAP.57.010305

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  • Possible charge order structure of stoichiometric YbFe2O4 Reviewed

    Kosuke Fujiwara, Tomoyuki Karasudani, Mamoru Fukunaga, Hiroyuki Kobayashi, Jun Kano, Pierre-Eymeric Janolin, Jean-Michel Kiat, Yoshio Nogami, Ryusuke Kondo, Naoshi Ikeda

    FERROELECTRICS   512 ( 1 )   85 - 91   2017

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    DOI: 10.1080/00150193.2017.1349945

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  • Quantitative study of band structure in BaTiO3 particles with vacant ionic sites Reviewed

    Norihiro Oshime, Jun Kano, Naoshi Ikeda, Takashi Teranishi, Tatsuo Fujii, Takeji Ueda, Tomoko Ohkubo

    JOURNAL OF APPLIED PHYSICS   120 ( 15 )   2016.10

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    DOI: 10.1063/1.4964803

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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 )   2016.8

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    DOI: 10.1063/1.4961639

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  • Iron vacancy effect on the magnetization of YbFe2O4 Reviewed

    Fujiwara K., Miyajima M., Fukunaga M., Kano J., Kobayashi H., Ikeda N.

    Transactions of the Materials Research Society of Japan   41 ( 1 )   139 - 142   2016

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    Language:English   Publisher:The Materials Research Society of Japan  

    We report the effect of iron vacancies on the magnetic property of spin and charge ordered system YbFe2O4 single crystals. The excess amount of iron compensates for the evaporation of iron during crystal growth. We concluded that samples grown with the standard method contain iron vacancies of more than 10%. It is considered that increasing the iron in the starting material recovers the iron stoichiometry, and the proper magnetic property appears. With recovery of the chemical stoichiometry, the magnetic hysteresis loop changes from a double loop to a single loop, which indicates the development of spin coherence and the appearance of a large ferrimagnetic domain. The anomaly found in the thermomagnetization curve at approximately 150 K, the so-called TLT transition, disappears with better stoichiometry. This fact indicates that TLT is not a kind of phase transition but an effect of iron vacancy. Our discovery demonstrates that most of the crystals used in RFe2O4 research might contain many iron vacancies. The confused discussions on this material about the spin order model, the charge order model, and so on might reconsider such chemical stoichiometry, including iron vacancies.

    DOI: 10.14723/tmrsj.41.139

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  • Present status of the experimental aspect of RFe2O4 study Reviewed

    Naoshi Ikeda, Tomoko Nagata, Jun Kano, Shigeo Mori

    JOURNAL OF PHYSICS-CONDENSED MATTER   27 ( 5 )   2015.2

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  • 10 fs Dynamics of Photoinduced Magnetic Transition in Double-Layered Charge Ordering in LuFe2O4 Under Interlayer Excitation Reviewed

    Y. Sagae, K. Yamada, T. Ishikawa, K. Itoh, H. Itoh, T. Sasaki, T. Nagata, J. Kano, T. Kambe, S. Ishihara, N. Ikeda, S. Iwai

    ULTRAFAST PHENOMENA XIX   162   252 - 256   2015

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    DOI: 10.1007/978-3-319-13242-6_61

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  • Valence instability of iron oxide ultrafine particles on ferroelectrics studied by Mossbauer spectroscopy Reviewed

    Jun Kano, Takumi Okamoto, Shin Nakamura, Akio Fuwa, Takafumi Otoyama, Yoshiaki Nakazaki, Hideki Hashimoto, Jun Takada, Norihiro Oshime, Miho Ito, Naoshi Ikeda

    JAPANESE JOURNAL OF APPLIED PHYSICS   53 ( 5 )   2014.5

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.7567/JJAP.53.05FB24

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  • 10 fs dynamics of photoinduced magnetic transition in double-layered charge ordering in LuFe2O4 under interlayer excitation

    Y. Sagae, K. Yamada, T. Ishikawa, K. Itoh, H. Itoh, T. Sasaki, T. Nagata, J. Kano, T. Kambe, S. Ishihara, N. Ikeda, S. Iwai

    Optics InfoBase Conference Papers   2014

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    Language:English   Publishing type:Research paper (international conference proceedings)   Publisher:Optical Society of America (OSA)  

    DOI: 10.1364/up.2014.08.tue.p2.41

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  • Carrier mobility of iron oxide nanoparticles supported on ferroelectrics studied by Mossbauer spectroscopy Reviewed

    T. Okamoto, J. Kano, S. Nakamura, A. Fuwa, T. Otoyama, Y. Nakazaki, H. Hashimoto, J. Takada, M. Ito, N. Ikeda

    HYPERFINE INTERACTIONS   219 ( 1-3 )   147 - 152   2013.4

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    DOI: 10.1007/s10751-012-0687-3

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  • Magnetoelectric Effect Driven by Magnetic Domain Modification in LuFe2O4 Reviewed

    Takashi Kambe, Yukimasa Fukada, Jun Kano, Tomoko Nagata, Hiroyuki Okazaki, Takayoshi Yokoya, Shuichi Wakimoto, Kazuhisa Kakurai, Naoshi Ikeda

    PHYSICAL REVIEW LETTERS   110 ( 11 )   2013.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1103/PhysRevLett.110.117602

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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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    DOI: 10.1016/j.jssc.2012.11.020

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  • Nonlinear Electric Conductivity of Charge Ordered System RFe2O4 (R = Lu, Yb) Reviewed

    T. Nagata, Y. Fukada, M. Kawai, J. Kano, T. Kambe, E. Dudzik, R. Feyerherm, P. E. Janolin, J. M. Kiat, N. Ikeda

    FERROELECTRICS   442 ( 1 )   45 - 49   2013

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    DOI: 10.1080/00150193.2013.773874

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  • Doping effects on dynamical physical properties of Ca0.6Sr0.4Bi4Ti4O15 ferroelectric ceramics with layered-perovskite structure Reviewed

    M. S. Islam, J. Kano, Q. R. Yin, S. Kojima

    JOURNAL OF ELECTROCERAMICS   28 ( 2-3 )   89 - 94   2012.5

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    DOI: 10.1007/s10832-012-9684-9

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  • Exchange Bias in Multiferroic RFe2O4 (R = Y, Er, Tm, Yb, Lu, and In) Reviewed

    Kenji Yoshii, Naoshi Ikeda, Yasuo Nishihata, Daisuke Maeda, Ryota Fukuyama, Tomoko Nagata, Jun Kano, Takashi Kambe, Yoichi Horibe, Shigeo Mori

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   81 ( 3 )   2012.3

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    DOI: 10.1143/JPSJ.81.033704

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  • Magnetic and dielectric study of Bi2CuO4 Reviewed

    K. Yoshii, T. Fukuda, H. Akahama, J. Kano, T. Kambe, N. Ikeda

    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS   471 ( 21-22 )   766 - 769   2011.11

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    DOI: 10.1016/j.physc.2011.05.049

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  • Multiferroic Character and Magnetic Phase of LuFe2O4 Reviewed

    Daisuke Ohishi, Hironori Hayakawa, Hiroshi Akahama, Naoshi Ikeda, Takashi Kambe, Yoji Matsuo, Noboru Kimizuka, Jun Kano, Kenji Yoshii

    FERROELECTRICS   415   51 - 56   2011

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    DOI: 10.1080/00150193.2011.577371

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  • Electric Field Response of Stoichiometric LuFe2O4 Reviewed

    Naoshi Ikeda, Masato Kubota, Hironori Hayakawa, Hiroshi Akahama, Daisuke Ohishi, Akiko Nakanishi, Takako Funabiki, Yoji Matsuo, Noboru Kimizuka, Takashi Kambe, Shigeo Mori, Jun Kano

    FERROELECTRICS   414   41 - 47   2011

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    DOI: 10.1080/00150193.2011.577294

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  • Dynamical Properties of Protonic Conductor K3H(SeO4)(2) Reviewed

    Fumihito Shikanai, Keisuke Tomiyasu, Naofumi Aso, Shinichi Itoh, Susumu Ikeda, Takashi Kamiyama, Shinya Tsukada, Jun Kano, Seiji Kojima

    FERROELECTRICS   416   101 - 107   2011

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    DOI: 10.1080/00150193.2011.577715

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  • Terahertz Spectroscopy of Electronic Ferroelectric LuFe2O4 Crystal Reviewed

    Hideaki Kitahara, Jun Kano, Yukimasa Fukada, Takashi Kambe, Naoshi Ikeda, Masanori Hangyo

    2011 36TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)   2011

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  • Acoustic phonons and a central mode in the protonic conductor K3 H (SeO4) 2 Reviewed

    Fumihito Shikanai, Shinya Tsukada, Jun Kano, Seiji Kojima

    Physical Review B - Condensed Matter and Materials Physics   81 ( 1 )   2010.1

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    DOI: 10.1103/PhysRevB.81.012301

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  • Acoustic phonons and a central mode in the protonic conductor K3H(SeO4)(2) Reviewed

    Fumihito Shikanai, Shinya Tsukada, Jun Kano, Seiji Kojima

    PHYSICAL REVIEW B   81 ( 1 )   2010.1

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    DOI: 10.1103/PhysRevB.81.012301

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  • Finite Size Effects on the Ferroelectric Phase Transition of Bi3.5La0.5Ti3O12 Nano-Particles Reviewed

    M. S. Islam, J. Kano, S. Kojima

    FERROELECTRICS   402   16 - 22   2010

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    DOI: 10.1080/00150191003697062

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  • Synthesis and Characterization of Ferroelectric Lead-Based Perovskite Nanoparticles Reviewed

    J. Kano, K. Kato, T. Tsukui, T. Kizuka, S. Kojima

    FERROELECTRICS   402   37 - 42   2010

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    DOI: 10.1080/00150191003697203

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  • Microstructure and Phase Transition of MnO2-Doped Bismuth Layered-Structure Ferroelectrics Reviewed

    Md Saidul Islam, Jun Kano, Shinya Tsukada, Qingrui Yin, Seiji Kojima

    JAPANESE JOURNAL OF APPLIED PHYSICS   48 ( 9 )   2009.9

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    DOI: 10.1143/JJAP.48.09KC10

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  • Structural Dynamics of Lead Nanoparticles with Stable Metallic Surfaces on PbxSr1-xTiO3 Prepared by Co-Precipitation Reviewed

    Jun Kano, Tokushi Kizuka, Fumihito Shikanai, Seiji Kojima

    2009 9TH IEEE CONFERENCE ON NANOTECHNOLOGY (IEEE-NANO)   287 - 290   2009

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  • Dynamical properties of polar nanoregions of relaxor ferroelectric Pb(Ni1/3Nb2/3)O-3-0.29PbTiO(3) Reviewed

    Shinya Tsukada, Yuji Ike, Jun Kano, Tadashi Sekiya, Yoshiro Shimojo, Ruiping Wang, Seiji Kojima

    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN   77 ( 3 )   2008.3

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    DOI: 10.1143/JPSJ.77.033707

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  • PHYSICAL PROPERTIES OF FERROELECTRIC BI4-xLAxTI3O12 NANO-PARTICLES SYNTHESIZED BY THE CHEMICAL CO-PRECIPITATION METHOD Reviewed

    M. S. Islam, J. Kano, F. Shikanai, S. Kojima

    INTEGRATED FERROELECTRICS   100   146 - 155   2008

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    DOI: 10.1080/10584580802540942

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  • Temperature Evolution of the Optical Phonons in Pb(Ni(1/3)Nb(2/3))O(3) Single Crystals Studied by Raman Scattering Reviewed

    Jun Kano, Hiroki Taniguchi, Desheng Fu, Mitsuru Itoh, Seiji Kojima

    FERROELECTRICS   367   67 - 72   2008

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    DOI: 10.1080/00150190802365962

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  • Dynamical properties of the relaxor ferroelectric 0.71Pb(Ni1/3Nb2/3)O-3-0.29PbTiO(3) probed by Brillouin and Raman scattering Reviewed

    Shinya Tsukada, Yuji Ike, Jun Kano, Seiji Kojima, Tadashi Sekiya, Yoshiro Shimojo, Ruiping Wang

    IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL   54 ( 12 )   2632 - 2636   2007.12

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    DOI: 10.1109/TUFFC.2007.590

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  • Raman scattering study of Ca-modified lead titanate Reviewed

    Kihiro Kato, Shinya Tsukada, Jun Kano, Takashi Yamamoto, Seiji Kojima

    IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL   54 ( 12 )   2599 - 2602   2007.12

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    DOI: 10.1109/TUFFC.2007.585

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  • Broadband inelastic light scattering study on relaxor ferroelectrics Reviewed

    Shinya Tsukada, Yuji Ike, Jun Kano, Tadashi Sekiya, Yoshiro Shimojo, Ruiping Wang, Seiji Kojimal

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS   46 ( 10B )   7151 - 7154   2007.10

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    DOI: 10.1143/JJAP.46.7151

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  • Characterization of dielectric property of nanosized (Pb0.7Sr0.3)TiO3 powders studied by Raman scattering Reviewed

    Jun Kano, Shinya Tsukada, Fan Zhang, Tomoaki Karaki, Masatoshi Adachi, Seiji Kojima

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS   46 ( 10B )   7148 - 7150   2007.10

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    DOI: 10.1143/JJAP.46.7148

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  • Piezoelectric (Na0.5K0.5) NbO3-SrTiO3 ceramics in the tetragonal-orthorhombic phase boundary studied by Raman spectroscopy Reviewed

    Jun Kano, Keita Sasanuma, Shinya Tsukada, Seiji Kojima, Ruiping Wang, Kotaro Hanada, Kunio Matsusaki, Hiroshi Bando

    FERROELECTRICS   347   55 - 59   2007

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    DOI: 10.1080/00150190601187021

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  • Vibrational and dielectric properties of MnO2-doped bismuth layered-structure ferroelectrics Reviewed

    M. S. Islam, J. Kano, Q. R. Yin, S. Kojima

    2007 SIXTEENTH IEEE INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS, VOLS 1 AND 2   478 - 480   2007

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  • The aging effect in (Bi(0.5)Na(0.5))TiO(3) family with point defects Reviewed

    Y. Hidaka, S. Tsukada, J. Kano, S. Kojima

    2007 SIXTEENTH IEEE INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS, VOLS 1 AND 2   305 - 307   2007

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  • &lt;bold&gt;Raman Scattering Study of Ca-Modified Lead Titanate&lt;/bold&gt; Reviewed

    K. Kato, S. Tsukada, J. Kano, T. Yamamoto, S. Kojima

    2007 SIXTEENTH IEEE INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS, VOLS 1 AND 2   289 - +   2007

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  • Dynamical Properties of the Relaxor Ferroelectric 0.71Pb(Ni1/3Nb2/3)O3-0.29PbTiO3 Probed by Brillouin and Raman Scattering Reviewed

    Shinya Tsukada, Yuji Ike, Jun Kano, Tadashi Sekiya, Yoshihito Shimojo, Ruiping Wang, Seiji Kojima

    2007 SIXTEENTH IEEE INTERNATIONAL SYMPOSIUM ON THE APPLICATIONS OF FERROELECTRICS, VOLS 1 AND 2   285 - +   2007

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    DOI: 10.1109/ISAF.2007.4393242

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  • Investigation on dielectric and piezoelectric properties of (1-x)(Na 0.5K0.5)NbO3-xSrTiO3 ceramics Reviewed

    K. Sasanuma, S. Tsukada, J. Kano, S. Kojima, R. Wang, K. Hanada, K. Matsusaki, H. Bando

    Ferroelectrics   348   106 - 112   2007

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    DOI: 10.1080/00150190701196237

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  • Raman scattering study of ca modified lead titanate Reviewed

    S. Tsukada, K. Kato, J. Kano, T. Yamamoto, S. Kojima

    FERROELECTRICS   355   66 - 70   2007

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    DOI: 10.1080/00150190701515931

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  • Diffuse phase transition of 0.8Pb( Ni1/3Nb2/3)O-3-0.2PbTiO(3) single crystals studied by micro-Brillouin scattering Reviewed

    S. Tsukada, Y. Ike, J. Kano, T. Sekiya, Y. Shimojo, R. Wang, S. Kojima

    FERROELECTRICS   346   37 - 42   2007

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    DOI: 10.1080/00150190601180182

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  • Broadband inelastic light scattering of a relaxor ferroelectric 0.71Pb(Ni1/3Nb2/3)O-3-0.29PbTiO(3) Reviewed

    Shinya Tsukada, Yuji Ike, Jun Kano, Tadashi Sekiya, Yoshihito Shimojo, Ruiping Wang, Seiji Kojima

    APPLIED PHYSICS LETTERS   89 ( 21 )   2006.11

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    DOI: 10.1063/1.2393159

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  • Dynamic Property of the Initial Process in the Dielectric Relaxation Phenomenon in KH2PO4

    J. Kano, T. Yagi

    Ferroelectrics   333 ( 1 )   41 - 46   2006.5

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    DOI: 10.1080/00150190600678699

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  • Dynamics of water-ethanol mixtures studied by light scattering Reviewed

    Maii Sato, Yuji Ike, Jun Kano, Seiji Kojima

    FLOW DYNAMICS   832   291 - +   2006

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  • Brillouin and Raman scattering studies on the relaxor ferroelectric 0.71Pb(Nl1/3Nb2/3)O3-0.29PbTiO3 single crystal

    Shinya Tsukada, Yuji Ike, Jun Kano, Ruiping Wang, Yoshiro Shimojo, Tadashi Sekiya, Seiji Kojima

    Materials Research Society Symposium Proceedings   966   96 - 101   2006

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  • Initial Excitation Process of Ferroelectric B2 Soft Mode in KD2PO4*

    Jun Kano, Yuhji Tsujimi, Keith Nelson, Toshirou Yagi

    Ferroelectrics   308 ( 1 )   17 - 21   2004.1

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    DOI: 10.1080/00150190490508675

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  • Femtosecond Time-Resolved Spectroscopic Study of the Slow Dynamics in the Structural Phase Transition Reviewed

    T. Yagi, J. Kano, T. Watanuki, Y. Tsujimi, K.A. Nelson

    J. Korean. Phys. Soc.   42   S1012 - S1016   2003.4

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  • The Extremely Early Stage of the Ferroelectric B 2 Soft Mode of KDP Studied by the Impulsive Stimulated Raman Scattering

    Jun Kano, Yuhji Tsujimi, Keith A. Nelson, Toshirou Yagi

    Ferroelectrics   285 ( 1 )   59 - 66   2003.1

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    DOI: 10.1080/00150190390205898

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  • Phase Transition Dynamics Studied by Coherent Phonon Excitation with Ultrashort Laser Pulses Reviewed

    Toshirou Yagi, Jun Kano, Tateo Watanuki, Yuhji Tsujimi, Keith A. Nelson

    Ferroelectrics   284 ( 1 )   3 - 13   2003.1

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    DOI: 10.1080/00150190390204240

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  • Initial Process of the Ferroelectric B 2 Soft Mode of KDP Studied by the Impulsive Stimulated Raman Scattering with Heterodyne Detection Reviewed

    Jun Kano, Yuhji Tsujimi, Keith A. Nelson, Toshirou Yagi

    Ferroelectrics   272 ( 1 )   57 - 62   2002.1

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    DOI: 10.1080/713716272

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MISC

  • Surface-enhanced Raman scattering with silver fractal tree-like structures

    武安伸幸, 岸本栞奈, 菱井有莉, 渡部紘也, 野上航平, MA Q., 庄司暁, 狩野旬

    日本物理学会講演概要集(CD-ROM)   77 ( 1 )   2022

  • 金属-酸化物薄膜接合系におけるエネルギーバンドアライメント

    狩野旬, 押目典宏, 廣瀬哲, 上田剛慈, 安井伸太郎, 浜嵜容丞, 伊藤満, 三上仁志, 池田直, 藤井達生, 柏原浩大, SCHNEIDER Julien

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)   80th   2019

  • 強誘電体BaTiO3薄膜の分極反転時における電子構造変化

    押目典宏, 狩野旬, 池永英司, 安井伸太郎, 日隈聡士, 池田直, 浜嵜容丞, 安原颯, 横谷尚睦, 伊藤満, 藤井達生, 保井晃, 大沢仁志

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)   79th   2018

  • 分極効果で変調される強誘電体BaTiO3薄膜の電子構造

    押目典宏, 狩野旬, 狩野旬, 池永英司, 安井伸太郎, 日隈聡士, 池田直, 浜嵜容丞, 安原颯, 横谷尚睦, 伊藤満, 藤井達生, 保井晃

    応用物理学会春季学術講演会講演予稿集(CD-ROM)   65th   2018

  • 分極効果で変調される強誘電体BaTiO3薄膜の電子構造

    押目典宏, 狩野旬, 狩野旬, 池永英司, 安井伸太郎, 日隈聡士, 池田直, 浜嵜容丞, 安原颯, 横谷尚睦, 伊藤満, 藤井達生, 保井晃

    日本セラミックス協会年会講演予稿集(CD-ROM)   2018   2018

  • 電場印加前後でのBaTiO3内殻原軌道のエネルギー準位計測

    押目典宏, 狩野旬, 狩野旬, 池永英司, 安井伸太郎, 日隈聡士, 池田直, 浜嵜容丞, 安原颯, 横谷尚睦, 伊藤満, 藤井達生, 保井晃

    日本物理学会講演概要集(CD-ROM)   73 ( 1 )   2018

  • Direct observation of band bending structure on ferroelectric BaTiO3

    Oshime N, Kano J, Ikenaga E, Yasui S, Hinokuma S, Ikeda N, Yokoya T, Fujii T

    Meeting Abstracts of the Physical Society of Japan   72 ( 0 )   2725 - 2725   2017

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    &lt;p&gt;自発分極は試料内部の静電ポテンシャルを傾斜させる。強誘電体の原子軌道エネルギーはこの傾斜に応じて系統的に変化すると考えられる。この現象はバンドベンディングと呼ばれ40年以上に渡り予想されてきた。今回,BaTiO_3_においてバンドベンディング現象を直接的に観測したので報告する。本研究において得られた実験結果は,エピタキシャル製膜された強誘電体薄膜試料と深さ分解光電子分光実験を組み合わせることで初めて達成できた。&lt;/p&gt;

    DOI: 10.11316/jpsgaiyo.72.1.0_2725

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  • BaTiO3のバンドベンディング構造

    押目典宏, 狩野旬, 狩野旬, 池永英司, 安井伸太郎, 日隈聡士, 池田直, 浜嵜容丞, 安原颯, 横谷尚睦, 伊藤満, 藤井達生, 保井晃

    応用物理学会秋季学術講演会講演予稿集(CD-ROM)   78th   2017

  • 分極効果で変調される強誘電体BaTiO3の電子構造

    押目典宏, 狩野旬, 狩野旬, 池永英司, 安井伸太郎, 日隈聡士, 池田直, 浜嵜容丞, 安原颯, 横谷尚睦, 伊藤満, 藤井達生, 保井晃

    日本物理学会講演概要集(CD-ROM)   72 ( 2 )   2017

  • Mnをドープした(YbFe2O4)m(YbFeO3)n,m=1,n=1単結晶の磁性と誘電特性

    烏谷友之, 藤原孝将, 藤井達生, 戸取和大, 古林宏之, 福永守, 堀部陽一, 狩野旬, 狩野旬, 池田直

    日本物理学会講演概要集(CD-ROM)   71 ( 1 )   2016

  • 化学当量性の良いYbFe2O4の電荷秩序と誘電性 1

    藤原孝将, 宮島瑞樹, 烏谷友之, 福永守, 古林宏之, 永田知子, 狩野旬, 狩野旬, 池田直

    日本物理学会講演概要集(CD-ROM)   70 ( 2 )   2015

  • 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

  • 走査型放射光顕微鏡で見る強相関電子系物質のドメイン構造

    竹下聡史, 大隅寛幸, 有馬孝尚, 有馬孝尚, 高田昌樹, 高田昌樹, 赤浜裕士, 神戸高志, 狩野旬, 永田知子, 池田直, 湯本博勝, 小山貴久, 大橋治彦, 大橋治彦

    日本放射光学会年会・放射光科学合同シンポジウム予稿集   25th   2012

  • 22pGK-6 Dielectric properties of LuFe_2O_4 under magnetic fields

    Fukada Y., Kambe T., Nagata T., Kano J., Ikeda N.

    Meeting abstracts of the Physical Society of Japan   66 ( 2 )   542 - 542   2011.8

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  • 22pGK-8 Electrical conduction mechanism of electronic ferroelectric RFe_2O_4

    Nagata T., Fukada Y., Akahama H., Funae T., Okazaki H., Yokoya T., Kambe T., Kano J, Ikeda N.

    Meeting abstracts of the Physical Society of Japan   66 ( 2 )   542 - 542   2011.8

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  • 22pGK-5 Calorimetric Property of Stacked Triangular Mixes Iron Valence Oxide LuFe_2O_4

    Kano J., Kambe T., Fukada Y., Nagata T., Ikeda N.

    Meeting abstracts of the Physical Society of Japan   66 ( 2 )   541 - 541   2011.8

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  • 23aPS-131 Low Frequency Micro-Raman Scattering in LuFe_2O_4

    Mitsumura T., Takesada M., Fukada Y., Nagata N., Kano J., Ikeda N., Onodera A.

    Meeting abstracts of the Physical Society of Japan   66 ( 2 )   1005 - 1005   2011.8

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  • 26aPS-118 Low Frequency Light Scattering in LuFe_2O_4

    Mitsumura T., Takesada M., Akahama Y., Kambe T., Kano J., Nagata T., Ikeda N., Onodera A.

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   971 - 971   2011.3

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  • 27pTM-4 Effects of Yb or Fe site substitution of YbFe_2O_4

    Nagata T., Funae T., Nakanishi A., Kano J., Kambe T., Okazaki H., Muraoka Y., Yokoya T.

    Meeting abstracts of the Physical Society of Japan   66 ( 1 )   982 - 982   2011.3

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  • 集光放射光で見たLuFe2O4の電荷秩序ドメイン

    竹下聡史, 大隅寛幸, 有馬孝尚, 有馬孝尚, 高田昌樹, 赤浜裕士, 神戸高志, 狩野旬, 永田知子, 池田直, 湯本博勝, 小山貴久, 大橋治彦

    日本物理学会講演概要集   66 ( 1 )   2011

  • 26aYJ-8 Metal nanoclusters on ferroelectric oxides studied by HRTEM

    Kano Jun, Kizuka Tokushi, Kojima Seiji

    Meeting abstracts of the Physical Society of Japan   64 ( 2 )   866 - 866   2009.8

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  • 23pYE-5 Broadband Light Scattering Study on Pb(Ni_<1/3>Nb_<2/3>)O_3-0.29PbTiO_3 and Pb(Zn_<1/3>Nb_<2/3>)O_3-0.07PbTiO_3 Single Crystals

    Tsukada S., Ike Y., Kano J., Sekiya T., Shimojo Y., W. Ruiping, Kojima S.

    Meeting abstracts of the Physical Society of Japan   63 ( 1 )   916 - 916   2008.2

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  • 2-01-01 Polar Nanoregions in Relaxor Ferroelectrics by Micro-Brillouin Spectroscopy(Ultrasonic properties of materials, Phonon physics)

    Tsukada Shinya, Ike Yuji, Kano Jun, Sekiya Tadashi, Shimojo Yoshiro, Wang Ruiping, Kojima Seiji

    Proceedings of Symposium on Ultrasonic Electronics   28   175 - 176   2007.11

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  • Acoustic Properties of Relaxor Ferroelectric Pb(Ni_<1/3>Nb_<2/3>)O_3-0.29PbTiO_3

    TSUKADA Shinya, IKE Yuji, KANO Jun, SEKIYA Tadashi, SHIMOJO Yoshiro, WANG Ruiping, KOJIMA Seiji

    IEICE technical report   107 ( 283 )   9 - 12   2007.10

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    Acoustic properties of a relaxor ferroelectric Pb(Ni_<1/3>Nb_<2/3>)O_3-0.29PbTiO_3 single crystal have been studied by Miro-Brillouin scattering to manifest the mechanism of the diffuse phase transition. These temperature dependences show anomalies at three characteristic temperatures : at Burns temperature T_d related to the formation of the PNRs, at T^* associated with the growth of the PNRs, and at freezing temperature T_f related to the temperature-induced macroscopic structural phase transition, which are closely related to the dynamical behavior of the PNRs.

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  • 24aTE-6 Broadband Light Scattering Study on the Relaxor Ferroelectric Pb(Ni_<1/3>Nb_<2/3>)O_3-0.29PbTiO_3 Single Crystal

    Tsukada S., Ike Y., Kano J., Sekiya T., Shimojo Y., Ruiping W., Kojima S.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   1015 - 1015   2007.8

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  • P2-3 Brillouin Scattering Spectroscopy on α-β Phase Transition of Quartz Using an Angular Dispersion-Type Fabry-Perot Interferometer(Short oral presentation for posters)

    Tsukada Shinya, Ike Yuji, Kano Jun, Kojima Seiji

    Proceedings of Symposium on Ultrasonic Electronics   26   217 - 218   2005.11

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Presentations

  • Single domain growth and charge ordering of epitaxial YbFe2O4 films

    Takumi Sakagami, Reika Ota, Jun Kano, Naoshi Ikeda, Tatsuo Fujii

    CRYSTENGCOMM  2021.8  ROYAL SOC CHEMISTRY

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    Event date: 2021.8

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    YbFe<INF>2</INF>O<INF>4</INF> is a charge-ordered ferroelectric that exhibits coupling between magnetization and electric polarization near room temperature and crystallizes in a rhombohedral structure (R3m). This study presents an attempt to fabricate stoichiometric and epitaxial YbFe<INF>2</INF>O<INF>4-delta</INF> films with a nearly single-domain structure using an RF magnetron sputtering method. The (0001)-oriented epitaxial films of YbFe<INF>2</INF>O<INF>4-delta</INF> on YSZ (111) substrates via reactive sputtering method exhibited clear three-fold symmetry normal to the substrate without the formation of twin domains rotated by 60 degrees. The oxygen stoichiometry of the epitaxial YbFe<INF>2</INF>O<INF>4-delta</INF> was improved by controlling an oxygen partial pressure (P<INF>O<INF>2</INF></INF>) during the deposition. The films showed a sharp ferrimagnetic transition, and the transition temperature (T<INF>N</INF>) increased linearly to approximately 245 K with decreasing P<INF>O<INF>2</INF></INF>. The magnitude of magnetization of the obtained films was comparable to that of bulk single crystals. Further, the electron diffraction pattern of the stoichiometric films confirmed the presence of three-dimensional charge order, which is consistent with the behavior of the bulk crystals as well.

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  • 酸化物に接合された金属薄膜への分子吸着挙動

    狩野旬, 押目典宏, 廣瀬哲, 上田剛慈, 安井伸太郎, 浜嵜容丞, 伊藤満, 三上仁志, 池田直, 藤井達生, 柏原浩大, SCHNEIDER Julien

    日本物理学会講演概要集(CD-ROM)  2019 

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  • Core-level binding-energy of BaTiO<sub>3</sub> with pre- and post-application of electric field

    Oshime N., Itoh M., Fujii T., Yasui A., Kano J., Ikenaga E., Yasui S., Hinokuma S., Ikeda N., Hamasaki Y., Yasuhara S., Yokoya T.

    Meeting Abstracts of the Physical Society of Japan  2018  The Physical Society of Japan

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    Event date: 2018

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  • Electronic states modulated by electric polarization in ferroelectric BaTiO<sub>3</sub>

    Oshime N., Itoh M., Fujii T., Yasui A., Kano J., Ikenaga E., Yasui S., Hinokuma S., Ikeda N., Hamasaki Y., Yasuhara S., Yokoya T.

    Meeting Abstracts of the Physical Society of Japan  2017  The Physical Society of Japan

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    Event date: 2017

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  • Quantitative study of band structure in iron oxides

    Oshime N., Kano J., Okamoto T., Ikeda N., fujii T.

    Meeting Abstracts of the Physical Society of Japan  2016  The Physical Society of Japan

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    Event date: 2016

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  • Dielectric property of Mn doped Yb<sub>2</sub>Fe<sub>3</sub>O<sub>7</sub> single crystal

    Karasudani T., Fujiwara K., Fujii T., Todori K., Fukunaga M., Horibe Y., Kano J., Ikeda N.

    Meeting Abstracts of the Physical Society of Japan  2016  The Physical Society of Japan

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  • 22pCH-13 Catalysis in metal-ferroelectric junctions

    Kano J., Ikeda N., Oshime N., Fujii T., Hashimoto H., Teranishi T., Ohkubo T., Ueda T., Yoshida T., Akiyama Y.

    Meeting Abstracts of the Physical Society of Japan  2015  The Physical Society of Japan (JPS)

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  • 22aCH-4 dielectric and the charge ordered structure changes by iron ion content of YbFe_2O_4

    Fujiwara Kosuke, Miyajima Mizuki, Fukunaga Mamoru, kano Jun, Nagata Tomoko, kambe Takashi, Ikeda Naoshi

    Meeting Abstracts of the Physical Society of Japan  2015  The Physical Society of Japan (JPS)

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  • 21pCJ-7 Mg-doping effects in Ba_<0.8>Sr_<0.2>TiO_3

    Oshime N., Kano J., Osaki K., Teranishi T., Yoshida T., Ikeda N., Fujii T., Ohkubo T., Ueda T.

    Meeting Abstracts of the Physical Society of Japan  2015  The Physical Society of Japan (JPS)

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  • 7aPS-10 Semiconductor and Dielectric Properties of RFe_2O_4

    Fujiwara Kosuke, Miyajima Mizuki, Nagata Tomoko, Fukunaga Mamoru, Kambe Takashi, kano Jun, Ikeda Naoshi

    Meeting abstracts of the Physical Society of Japan  2014.8.22  The Physical Society of Japan (JPS)

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  • 8pAF-11 Band structure and post-annealing treatment of BaTiO_3

    Oshime N., Kano J., Fujii T, Ikeda N.

    Meeting abstracts of the Physical Society of Japan  2014.8.22  The Physical Society of Japan (JPS)

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  • Phase transition of mixed valence layered iron oxide, YbFe_2O_4 II

    Nagata T., Kano J., Fukunaga M., Kambe T., Roman B., Feyerherm R., Dudzik E., Janolin P.E., Kiat J.M., Hasegawa N., Takesada M., Onodera A., Ikeda N.

    Meeting abstracts of the Physical Society of Japan  2013.8.26  The Physical Society of Japan (JPS)

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  • Relation of the band gap and chemical equivalent of Ba_<1-x>Sr_xTiO_3

    Oshime N., Kano J., Ikeda N.

    Meeting abstracts of the Physical Society of Japan  2013.8.26  The Physical Society of Japan (JPS)

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  • 28pXS-1 Symmetry study of mixed valence layered iron oxide, YbFe_2O_4

    Nagata T., Fukada Y., Kawai M., Kano J., Fukunaga M., Kambe T., Guiblin N., Feyerherm R., Dudzik E., Janolin P. E., Kiat J. M., Ikeda N.

    Meeting abstracts of the Physical Society of Japan  2013.3.26  The Physical Society of Japan (JPS)

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  • 27pXZB-11 Electric state of Fe oxide nano-particles on BaTiO_3,ZrO_2

    Okamoto T., Kano J., Nakamura S., Fuwa A., Otoyama T., Nakazaki Y., Hashimoto H., Takada J., Oshime N., Ito M., Ikeda N.

    Meeting abstracts of the Physical Society of Japan  2013.3.26  The Physical Society of Japan (JPS)

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  • 28pXS-2 Magnetoelectric response of LuFe_2O_4 by using impedance analysis

    Fukada Y., Nagata T., Kawai M., Ejiri H., Fukunaga M., kano J., Kambe T., Ikeda N.

    Meeting abstracts of the Physical Society of Japan  2013.3.26  The Physical Society of Japan (JPS)

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    Event date: 2013.3.26

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  • 27aXS-10 Semiconductor Property of RFe_2O_4(II)

    Kawai Masahiro, Ejiri Hiroki, Okamura Naoya, Fukada Yukimasa, Nagata Tomoko, Kano Jun, Kambe Takashi, Ikeda Naoshi

    Meeting abstracts of the Physical Society of Japan  2013.3.26  The Physical Society of Japan (JPS)

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    Event date: 2013.3.26

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  • 18pGB-8 Phase transition of mixed valence layered iron oxide, YbFe_2O_4

    Nagata T., Fukada Y., Kano J., Fukunaga M., Kambe T., Roman B., Boemare G., Feyerherm R., Dudzik E., Janolin P. E., Kiat J. M., Ikeda N.

    Meeting abstracts of the Physical Society of Japan  2012.8.24  The Physical Society of Japan (JPS)

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  • 18pGB-9 Impedance dependence on the electrode on LuFe_2O_4

    Fukada Y., Nagata T., Kawai M., Ejiri H., Fukunaga M., Kano J., Kambe T., Ikeda N.

    Meeting abstracts of the Physical Society of Japan  2012.8.24  The Physical Society of Japan (JPS)

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  • 24aYF-3 Anisotropy of Nonlinear Electric Conduction in YbFe_2O_4

    Nagata T., Fukada Y., Kawai M., Kano J., Kambe T., Ikeda N.

    Meeting abstracts of the Physical Society of Japan  2012.3.5  The Physical Society of Japan (JPS)

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  • 24aYF-4 Anisotropy of Dielectric Constant on LuFe_2O_4 under Magnetic Field

    Fukada Y., Nagata T., Kano J., Kambe T., Ikeda N., Kawai M.

    Meeting abstracts of the Physical Society of Japan  2012.3.5  The Physical Society of Japan (JPS)

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  • 25aPS-108 Semiconductor Property of R_<1-x>M_xFe_2O_4

    Kawai M., Nagata T., Fukada Y., Kano J., Kambe T., Ikeda N.

    Meeting abstracts of the Physical Society of Japan  2012.3.5  The Physical Society of Japan (JPS)

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Industrial property rights

  • 電磁波吸収材料及び電磁波吸収樹脂成型体

    古林 宏之, 森 正和, 池田 直, 狩野 旬

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    Applicant:三恵技研工業株式会社

    Application no:特願2019-182052  Date applied:2019.10.2

    Announcement no:特開2021-057545  Date announced:2021.4.8

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  • 電気熱量材料の特性評価装置、その方法、及びそのプログラム

    井口 亮, 内田 健一, 狩野 旬, 寺西 貴志

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    Applicant:国立研究開発法人物質・材料研究機構

    Application no:特願2019-136550  Date applied:2019.7.25

    Announcement no:特開2021-021578  Date announced:2021.2.18

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  • 炭素ナノ構造体の生成方法及び炭素ナノ構造体

    池田 直, 仁科 勇太, 狩野 旬, 青柳 佑海人, 藤原 孝将, 森 正和

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    Applicant:国立大学法人 岡山大学

    Application no:特願2018-222786  Date applied:2018.11.28

    Announcement no:特開2019-099989  Date announced:2019.6.24

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  • 炭素繊維三次元構造体及びその製造方法

    森 正和, 池田 直, 狩野 旬

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    Applicant:学校法人 龍谷大学

    Application no:特願2017-059075  Date applied:2017.3.24

    Announcement no:特開2018-161766  Date announced:2018.10.18

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  • 3次元繊維構造体

    朴 載赫, 明渡 純, 池田 直, 狩野 旬

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    Applicant:国立研究開発法人産業技術総合研究所

    Application no:特願2013-122402  Date applied:2013.6.11

    Announcement no:特開2014-240123  Date announced:2014.12.25

    Patent/Registration no:特許第6206905号  Date registered:2017.9.15 

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  • エタノール分解反応用触媒

    狩野 旬, 池田 直, 太田 美穗, 三津井 知宏, 中島 昭, 小松 通郎

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    Applicant:国立大学法人 岡山大学

    Application no:特願2013-035963  Date applied:2013.2.26

    Announcement no:特開2014-161811  Date announced:2014.9.8

    Patent/Registration no:特許第6269912号  Date registered:2018.1.12 

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  • 鉄系産業廃棄物から生成される鋳鉄用原料、鋳鉄用原料の製法、鋳鉄、鋳鉄の製法及び鋳鉄原料用製造キット

    池田 直, 狩野 旬, 上田 博之, 宮地 豊, 松島 守

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    Applicant:株式会社ユーテック

    Application no:特願2011-169118  Date applied:2011.8.2

    Announcement no:特開2013-032567  Date announced:2013.2.14

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  • 触媒及びその製造方法

    狩野 旬, 池田 直, 三宅 通博

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    Applicant:国立大学法人 岡山大学

    Application no:特願2011-024667  Date applied:2011.2.8

    Announcement no:特開2012-161751  Date announced:2012.8.30

    Patent/Registration no:特許第5804489号  Date registered:2015.9.11 

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  • 誘電体化合物薄膜及びその製造方法

    藤井 達生, 高田 潤, 池田 直, 狩野 旬, 中西 真

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    Applicant:国立大学法人 岡山大学

    Application no:特願2011-002596  Date applied:2011.1.10

    Announcement no:特開2012-144390  Date announced:2012.8.2

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  • クリップ

    狩野 明男, 石田 誠, 掛川 旬

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    Applicant:株式会社 アパートメント

    Application no:特願2009-261742  Date applied:2009.11.17

    Announcement no:特開2011-033184  Date announced:2011.2.17

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  • 触媒金属析出方法および触媒金属担持体粒子

    狩野 旬, 小島 誠治, 木塚 徳志, 鹿内 文仁

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    Applicant:国立大学法人 筑波大学

    Application no:特願2008-052685  Date applied:2008.3.3

    Announcement no:特開2009-207977  Date announced:2009.9.17

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  • 触媒製造方法および触媒

    狩野 旬, 小島 誠治, 木塚 徳志, 鹿内 文仁

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    Applicant:国立大学法人 岡山大学

    Application no:特願2008-052689  Date applied:2008.3.3

    Announcement no:特開2009-207979  Date announced:2009.9.17

    Patent/Registration no:特許第5460969号  Date registered:2014.1.24 

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  • 触媒金属担持強誘電体製造方法および触媒金属担持強誘電体

    狩野 旬, 小島 誠治, 木塚 徳志, 鹿内 文仁

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    Applicant:国立大学法人 筑波大学

    Application no:特願2008-052686  Date applied:2008.3.3

    Announcement no:特開2009-207978  Date announced:2009.9.17

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Research Projects

  • 導電性極性物質の電気分極ー傾斜電子バンド構造からの解明ー

    Grant number:24K08247  2024.04 - 2027.03

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    狩野 旬

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    Grant amount:\4550000 ( Direct expense: \3500000 、 Indirect expense:\1050000 )

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  • Morphology control of silver dendrites grown under light and study of their optical functions

    Grant number:23H01881  2023.04 - 2026.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    武安 伸幸, 紀和 利彦, 庄司 暁, 大久保 貴広, 狩野 旬

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    Grant amount:\18330000 ( Direct expense: \14100000 、 Indirect expense:\4230000 )

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  • Morphology control of silver dendrites grown under light and study of their optical functions

    Grant number:23K26574  2023.04 - 2026.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    武安 伸幸, 紀和 利彦, 庄司 暁, 大久保 貴広, 狩野 旬

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    Grant amount:\18330000 ( Direct expense: \14100000 、 Indirect expense:\4230000 )

    本研究では,光照射下で成長する銀樹状構造について,その作製条件と形状・サイズとの関係を明らかにする.新しく得られた知見に基づき,フラクタル形状を特徴付ける「フラクタル次元」と「世代数」が制御された銀樹状構造を光照射下で成長させることのできる大面積加工技術を確立する.さらに,フラクタル次元と世代数の揃った銀樹状構造を用いて,可視からテラヘルツ波といった広帯域においてフラクタル形状に特徴的な光学応答を探究する.
    初年度は,新たに青,緑,赤,近赤外CWレーザーを購入し,光を照射しながら銀樹状構造を成長させることのできる光学系を構築した.本光学系を用いて,照射光強度を変えながらナノプレートをシードとして用い,緑レーザー照射下で銀樹状構造を成長させたところ,フラクタル次元の低い構造や2本の枝が並走するように伸びた構造などが見られた.また初年度は,銀樹状構造の観察や光学的性質を評価するために必要となる基盤技術も研究した.置換めっきを利用して,銀樹状構造を金樹状構造へと変換する技術や銀樹状構造表面をシリカ薄膜で被覆する技術を開発した.これらの技術は表面増強ラマン散乱(SERS)応用に有効である.SERS計測の高感度化についても検討した.1体の銀樹状構造で532 nmと785 nmの励起波長を用いてSERSマッピングを測定して波長の違いによる増強電場の分布の違いを観測したり,アミノ酸のSERSスペクトル形状変化についても検討した.銀樹状構造のテラヘルツ域での光学応答を調べるために,銀樹状構造をPMMAに包埋する技術を開発した.銀樹状構造をPMMAに包埋することにより,個々の構造が凝集することなく,分散した状態でテラヘルツ光の透過率を測定できる.

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  • Understanding the Mechanism of Soil Particle Aggregation Enhancement by Natural Latex and its Application to Soil Erosion Control Technology

    Grant number:22K19224  2022.06 - 2025.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)  Grant-in-Aid for Challenging Research (Exploratory)

    宗村 広昭, 狩野 旬, 森 也寸志

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    Grant amount:\6370000 ( Direct expense: \4900000 、 Indirect expense:\1470000 )

    圃場から水域への土壌流亡(炭素流亡)は世界的環境問題であり過去60年以上の研究蓄積にも拘わらず未解決である.本研究は天然ゴムラテックス(以下,天然ラテックス)の特性・利点(高い凝集能,カーボンニュートラルなど)を生かし問題解決に挑戦する.現状では天然ラテックスによる土壌流出特性や土壌環境変化とそれらの制御に関する研究は殆どない.研究チームは,水文学,土壌物理学,固体化学を専門とし,天然ラテックスによる土壌物理化学特性変化や土壌流亡抑制(炭素貯留)効果を評価する.
    令和4年度はタイ2圃場から採取された土壌(Sandy loam,Red clay)とタイ産の天然ラテックスを用いて実験を実施した.輸入した土壌量が限られるため小型の実験装置を構築した.構築した実験装置を用いて,降雨強度20㎜/hと50mm/hの条件下において,表面流出量と浸透量を計測し,天然ラテックス混和の有無および土壌種類の違いによる影響を評価した.その際,時間経過による影響も評価するため,24時間経過後に同一実験を繰り返した.
    その結果,降雨強度20mm/hの場合,天然ラテックスを土壌に混和することで,表面流出量が減少し,浸透量が増加する傾向が伺えた.特に,Sandy loamでその傾向が顕著に観測された.また24時間経過後に実施した実験においても同様の傾向であった.一方,降雨強度50mm/hの場合では,表面流出量の方が浸透量よりも顕著に大きく,天然ラテックス混和の有無による差異は小さいことが分かった.

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  • Cellar differentiation on the electronic semiconductor device induced by the electric stimulation

    Grant number:22K18976  2022.06 - 2024.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)  Grant-in-Aid for Challenging Research (Exploratory)

    狩野 旬, 山本 泰生, 竹田 哲也, 守屋 央朗

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    Grant amount:\6500000 ( Direct expense: \5000000 、 Indirect expense:\1500000 )

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  • 電気分極由来の傾斜したバンド構造により発現する強誘電体の半導体物性

    Grant number:20KK0330  2021 - 2023

    日本学術振興会  科学研究費助成事業 国際共同研究加速基金(国際共同研究強化(A))  国際共同研究加速基金(国際共同研究強化(A))

    狩野 旬

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    Grant amount:\14040000 ( Direct expense: \10800000 、 Indirect expense:\3240000 )

    我々は先に,強誘電体BaTiO3薄膜に対し放射光光源を用いた角度分解光電子分光実験を行い,これまで未知であった傾斜したバンド構造を観測することに成功している。しかし,強誘電体の特異な電子構造は明らかになったばかりであり,強誘電性半導体を用いた電子デバイスの完全設計には至っていない。そこで本研究では,① 傾斜したバンド構造からの電気分極形成機構を解明し,②新しいフェロイックデバイス設計の指針となる,強誘電性半導体物性の解明に取り組む。
    初年度は,誘電性と磁性が共存するマルチフェロック物質においても,電気分極由来の傾斜したバンド構造が存在するのか?および従来型強誘電体に磁性イオンをドープさせることで磁性イオンが強誘電体結晶中でどのように振る舞うのか?の2点に着目して研究を行った。その結果,マルチフェロック物質BiFeO3において放射光源を用いた硬X線角度分解光電子分光法(AR-HAXPES)により,電気分極由来の傾斜バンド構造を初めて観測することに成功した。また,代表的な強誘電体BaTiO3に極低濃度の鉄イオンをドープさせた試料を合成し,その磁性およびバンド構造を明らかにすることができた。前者の成果については2022年6月の国際会議,後者は7月に仏共同研究グループに所属する博士論文公聴会にて発表される。
    このように研究成果は順調に出ているが,研究代表者が仏へ滞在し在外研究を行うことが未だできていない。理由はコロナによる海外渡航の制限によるもので,遅れながら2022年春には渡航を予定していたがウクライナ情勢もあること,仏共同研究グループの博士課程学生の研究を優先させために遅れが生じている。そのため日本で行う実験を前倒しして行い,その分の成果は出ているので研究内容に遅れはない。

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  • 熱イメージングを用いた誘電体における熱電現象・電場誘起熱応答の開拓

    Grant number:20H02609  2020.04 - 2023.03

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    井口 亮, 寺西 貴志, 狩野 旬, 内田 健一

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    Grant amount:\18200000 ( Direct expense: \14000000 、 Indirect expense:\4200000 )

    本研究は、誘電体において電場が誘起する熱現象を詳らかにし、誘電体の熱制御の方法や熱応答の理解の刷新を狙うものである。本年度は、サーモグラフィ法を用いて誘電体における縦熱電効果(電場と熱流方向が平行)の温度依存性および物質依存性の計測、そしてその定量化を目指した取り組みを行った。特に、交流サーモグラフィ計測における定量性の確保のため、評価・実験面での取り組みに力を入れた。実験結果の議論を行うためには、交流熱応答から適切な物理量を定量的に抽出する必要があり、既知の電気熱量効果をモデルとして評価法の構築に取り組んだ。熱リークや電気熱量効果そのものの周波数依存性を取り入れた評価法を検討した結果、赤外線カメラ自体の応答の補正も組み入れる必要性が分かった。これに対応した交流サーモグラフィ計測評価法を完成させ、電気熱量効果を対象として論文として公表する準備を進めた。実験面では、誘電体試料の電極および配線の間の接触状態によって、対象とする効果の温度変化量が変わる懸念があり、サーモグラフィ計測および高電圧印加と両立するプロービングシステムを設計し、準備を進めた。また、計画していた異種誘電体接合系における実験も進めた。電気的特性および機械的特性は問題なく、今後詳細な熱測定と解析を進める予定である。加えて、新たに物質依存性測定の一環として開始した単結晶試料を用いた実験においても進展があった。その熱信号は非自明な空間分布を有しており、縦熱電効果において誘電秩序の果たす想定外の役割がある可能性がある。これを明らかにすべく、可視光用の測定系をサーモグラフィと組み合わせた赤外-可視同時計測にも取り組んだ。

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  • Skewed electronic band structure of ferroelectric oxide induced by the electric polarization

    Grant number:19K05271  2019.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    Kano Jun

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    Grant amount:\4290000 ( Direct expense: \3300000 、 Indirect expense:\990000 )

    Angle-resolved hard x-ray photoemission spectroscopy (AR-HAXPES) has been performed on a skewed electronic structure in ferroelectric thin films. The slope of the skewed band could be changed by switching the polarization. In our experiment, an electronic structure skewed by the electric polarization of ferroelectric is revealed by the binding energy shift of atomic orbitals. All atomic orbitals show similar behaviors, but the magnitude of the energy shift is different. We attributed the electric polarization in the ion crystal to the atomic contribution. Born effective charges, which are different from nominal ionic charges, are defined by the actual amplitude of the polarization divided by the ionic displacement. We found that the magnitude of the energy shift of each atomic orbital has a good correlation with the Born effective charge. These findings lead to a better understanding of the origin of electric polarization.

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  • Fabrication of room-temperature multiferroic materials by rare-earth iron oxide system with triangular lattices

    Grant number:18H02057  2018.04 - 2022.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)

    FUJII Tatsuo

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    Grant amount:\17550000 ( Direct expense: \13500000 、 Indirect expense:\4050000 )

    RFe2O4 is expected as a next-generation multiferroic material. We attempted to synthesize its single-crystalline film by the sputtering method. As a result, the in-plane orientation of the RFe2O4 layer on the sapphire substrate rotates 30 ° depending on the presence of the Fe3O4 buffer layer. When Fe3O4 and RFe2O4 are laminated to form a multilayer film, the in-plane orientation also depends on their stacking order. In addition, when using the YSZ single crystal substrate, we succeeded in obtaining an RFe2O4 thin film that does not have twin domains and is almost completely composed of single domains.

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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  Grant-in-Aid for Challenging Exploratory Research

    FUJII Tatsuo, TAKEMURA Daiki, ANDOU Daiki

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    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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  • Novel catalysis assisted by ferroelectric charge fluctuation

    Grant number:24654089  2012.04 - 2014.03

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research  Grant-in-Aid for Challenging Exploratory Research

    KANO Jun, KANO Jun, HASHIMOTO Hideki

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    Grant amount:\3770000 ( Direct expense: \2900000 、 Indirect expense:\870000 )

    For the development of novel catalyst, the route to the optimum solution is through experiments. Here we propose the novel functional catalyst using ferroelectrics based on the semiconducting property and the coherent ferroelectric fluctuation.

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  • ガラスのスローダイナミクスにおけるモード結合理論の定量的解釈

    Grant number:17740274  2005 - 2006

    日本学術振興会  科学研究費助成事業 若手研究(B)  若手研究(B)

    狩野 旬

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    Grant amount:\3400000 ( Direct expense: \3400000 )

    液体ガラス転移のダイナミクスの本質が理解されていないのは、その巨視的性質が実に様々なスケールを持つ運動過程により支配されているためである。平成17年度、比熱測定・周波数領域での誘電測定・光散乱実験では充分観測できなかった複雑液体中でのミクロな動的機構を、フェムト秒パルスレーザーを用いた光カー効果(OKE)を利用したコヒーレントフォノン励起法を用いることで直接時間領域での観測できるシステムの構築を試みた。OKEにヘテロダイン検波システムを取り入れたOHD-OKEシステムを立ち上げを行い、液体中のミクロなゆらぎを観測する事に成功した。平成18年度においては液体ガラス転移を示す系のひとつである水・エタノール二成分混合系に注目した。水・エタノールにおいてはまず低振動領域に現れる揺らぎを前年度にOKEにて観測したが、二成分混合系においては水・エタノール間にできる複雑な水素結合のネットワークが重要と考え特に水素結合間の揺らぎに注目した。そこで低振動領域(長時間領域)とは対照的に高振動数領域(短時間領域)に観測される水素-酸素(OH)結合の揺らぎはラマン散乱実験によって観測した。なおOH結合の揺らぎを他の内部振動モードから分離するために重水素置換した重水溶液にて行った。その結果、OH結合の揺らぎには特徴的な水・エタノール濃度依存性がある事がわかった。エタノール低濃度側においては、水・エタノール分子間をつなぐ水和シェル構造が堅固に構成されており、その構造は濃度によらず支配的である。一方、エタノール濃度が増していくと水・エタノール分子間をつなぐ水素結合のネットワークは連続的に変化していった。さらに永和シェル構造などミクロな領域で形成されるクラスターの大きさはエタノールよりアルキル基の多いブタノールなどに比べ小さい事も見積もられた。過冷却状態下で低振動領域に現れる揺らぎの詳細を明らかにすることでモード結合理論の定量的解析をするまでにはまだ至っていないが、今回ミクロな描像が明らかになった水・エタノール二成分混合系を対象に研究を進めていく計画である。

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  • 強誘電体の電気分極に由来 傾斜したバンド構造を観測 Newspaper, magazine

    科学新聞  1面  2020.7.17

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