Updated on 2025/07/05

写真a

 
NAGAO Nobuaki
 
Organization
Department of Comprehensive Technical Solutions Technical Expert staff
Position
Technical Expert staff
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Papers

  • X-ray structural study of charge and anion orderings of TMTTF salts Reviewed

    Y. Nogami, T. Ito, K. Yamamoto, N. Irie, S. Horita, T. Kambe, N. Nagao, K. Oshima, N. Ikeda, T. Nakamura

    Journal de Physique IV (Proceedings)   131   39 - 42   2005.12

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    Publisher：EDP Sciences  

    High resolution X-ray structure analyses and electronic structure calculation revealed the condition for the charge ordering(CO) observed in the (TMTTF) 2 X (Fabre) salts. The phase diagram of the electronic states including 2k F and 4k F CO has been proposed associated with magnitudes of molecular dimerization and tetramerization.

    DOI： 10.1051/jp4:2005131008

    DOI： 10.1103/physrevlett.131.036401_references_DOI_OWU9Niak6fih389p9qu4k8PEX0R

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  • X-ray study of modulated structures of beta '-CuxV2O5 (x=0.29,0.39) Reviewed

    N. Nagao, Y. Nogami, K. Oshima, H. Yamada, Y. Ueda

    Physica B: Condensed Matter   329-333   713 - 714   2003.5

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    Publisher：Elsevier BV  

    Abstract High resolution X-ray study reveals the wave vector change in the modulated structure of the quasi-one-dimensional compound β′-Cu vanadium bronze. Structural modulation of the reduced wave vector q 0 =(0,0.305,0) emerges below 220 K in β′-Cu0.29V2O5. For β′-Cu0.39V2O5, not the single q modulation but two kinds of modulations were observed. A three-fold superlattice structure with q 1 =(0,0.333,0) appears below 210 K . An incommensurate modulated structure with q 2 =(0,0.26–0.29, 0) coexists below 175 K , whose satellite intensity and b ∗ component Qb have temperature and passing-time dependencies between 140 and 175 K . The competition between q 1 and q 2 modulations was also observed. It seems that the q 2 is deeply related to the physical property change between 140 and 180 K confirmed by the decrease in the magnetic susceptibility and the increase in the resistivity.

    DOI： 10.1016/s0921-4526(02)02021-5

    DOI： 10.1143/jpsj.73.914_references_DOI_SOEi5AkzUbbi1GaSBA7HQPv38sM

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  • Two incommensurate CDWs in low–dimensional conductor η -Mo4O11 Reviewed

    Y. Nogami, T. Kambe, N. Nagao, K. Oshima

    Synthetic Metals   120 ( 1-3 )   1049 - 1050   2001.3

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    Publisher：Elsevier BV  

    Using X-ray camera and diffractometer, structural evidence of the second CDW transition for the quasi two-dimensional conductor η-Mo 4 O 11 was presented. CDW critical wave vectors have been determined with high precision. Extremely weak satellite reflections at the reduced wave vector q 2 =(0.552 0.47 0.30) emerge below 25 K. Satellite reflections at the reduced wave vector q 1 = (0 0.232 0) was observed below 105 K.

    DOI： 10.1016/s0379-6779(00)01192-9

    DOI： 10.7566/jpsj.92.084706_references_DOI_OUH8ujZaM6m5FVs84ZKABb0f2un

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MISC

  • 30pUE-11 Development of Low Temperature Diffuse Scattering Camera in High Magnetic Field

    Horita S., Ito T., Irie N., Ikeda N., Nogami Y., Nagao N., kanbe T., Oshima K., Isobe M., Ueda Y.

    Meeting Abstracts of the Physical Society of Japan   61.1.3   657   2006

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    Language：Japanese   Publisher：The Physical Society of Japan  

    DOI： 10.11316/jpsgaiyo.61.1.3.0_657_4

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  • 25pPSA-60 ESR study of β'-Cu_xV_2O_5(x=0.29, 0.39)

    Nagao N., Kambe T., Oshima K., Ueda Y.

    Meeting Abstracts of the Physical Society of Japan   60.1.3   575   2005

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    Language：Japanese   Publisher：The Physical Society of Japan  

    DOI： 10.11316/jpsgaiyo.60.1.3.0_575_1

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  • Low temperature structures in (TMTTF)_2X 3

    Nogami Y., Kambe T., Nagao N., Fujiwara M., Oshima K., Nakamura T., Ikeda N.

    Meeting Abstracts of the Physical Society of Japan   58.1.4   790   2003

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    Language：Japanese   Publisher：The Physical Society of Japan  

    DOI： 10.11316/jpsgaiyo.58.1.4.0_790_3

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  • X-ray study of modulated structures of β'-Cu_xV_2O_5 (x=0.29,0.39)

    Nagao N., Nogami Y., Oshima K., Yamada H., Ueda Y.

    Meeting Abstracts of the Physical Society of Japan   58.1.3   575   2003

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    Language：Japanese   Publisher：The Physical Society of Japan  

    DOI： 10.11316/jpsgaiyo.58.1.3.0_575_4

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  • Low temperature structures in (TMTTF)_2X 4

    Nogami Y., Kambe T., Fujiwara M., Oshima K., Nagao N., Nakamura T., Ikeda N.

    Meeting Abstracts of the Physical Society of Japan   58.2.4   756   2003

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    Language：Japanese   Publisher：The Physical Society of Japan  

    DOI： 10.11316/jpsgaiyo.58.2.4.0_756_1

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  • 24aXW-10 Effects of Tungsten doping on the electronic state in η-Mo_4O_<11>

    Nagao N., Tsuboi S., Kambe T., Nogami Y., Oshima K.

    Meeting Abstracts of the Physical Society of Japan   57.1.4   724   2002

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    Language：Japanese   Publisher：The Physical Society of Japan  

    DOI： 10.11316/jpsgaiyo.57.1.4.0_724_2

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  • 27pXF-2 η-Mo_4O_nのCDW転移と不純物効果

    坪井 静子, 神戸 高志, 長尾 暢顕, 野上 由夫, 大嶋 孝吉

    日本物理学会講演概要集 56(1) 704-704 2001年3月9日   2001.3

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  • 25pG-13 Structural symmetry of α'-NaV_2O_5 below 34K.

    Nogami Y, Nagao N, Oshima K, Isobe M, Ueda Y

    Meeting Abstracts of the Physical Society of Japan   54.2.3   507   1999

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    Language：Japanese   Publisher：The Physical Society of Japan  

    DOI： 10.11316/jpsgaiyo.54.2.3.0_507_4

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Presentations

  • 25pG-13 NaV_2O_5の低温構造の対称性

    野上 由夫, 長尾 暢顕, 大嶋 孝吉, 磯辺 正彦, 上田 寛

    日本物理学会  1999.9.3 

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    Presentation type：Oral presentation (general)  

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