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Quantum critical phenomena of layered transition-metal compounds under multiple extreme conditions

Research Project

Project/Area Number 19550072
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Inorganic chemistry
Research InstitutionDoshisha University

Principal Investigator

KATO Masaki  Doshisha University, 理工学部, 准教授 (90271006)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2008: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords無機固体化学 / 一次元磁性体 / 磁化率 / 反強磁性 / レニウム酸化物 / 擬一次元磁性体 / ボナー・フィッシャーモデル / 層状遷移金属化合物 / 強相関 / 金属絶縁体転移 / 高温X線回折 / 錯体重合法
Research Abstract

本研究では, 磁気ゆらぎが強いと考えられる層状遷移金属化合物において, ナノスケールで物質・構造制御を行い, 超伝導等の新奇量子臨界現象を示す層状遷移金属化合物を開発することを目的とした. その結果, 擬一次元磁性体Y_5Re_2O_<12>について, 合成およびYサイトへの元素置換を行ない, その電磁気特性を評価することで, 多重極限環境における構造と物性の関連を詳細に研究した. 擬一次元磁性体への圧力印加は, 結晶構造の三次元性を高め, 電子の遍歴性を増大させることにより, 系の電磁気特性を著しく変化させる効果を有することが明らかになった.

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (17 results)

All 2009 2008 2007 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (5 results) Remarks (2 results)

  • [Journal Article] ^<59>Co,^<23>Na, and ^1H NMR Studies of Double-Layer Hydrated Superconductors NaCoO_2・yH_2O2008

    • Author(s)
      Y. Itho, H. Ohta, C. Michioka, M. Kato, K. Yoshimura
    • Journal Title

      Adv. In Solid State Phys. 47

      Pages: 329-341

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Metal-insulator transition in Pb_<2-x>Ln_xRu_2O_<7-d> (Ln=Sm, Eu) compounds2008

    • Author(s)
      M. Kato, Y. Tani, T. Imamura, K. Hirota, K. Yoshimura
    • Journal Title

      Physica B 403

      Pages: 1315-1317

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Methane Oxidation on Perovskite-Type Ca(Mn_<1-x>Ti_x)O_<3-d>2008

    • Author(s)
      H. Taguchi, K. Nakade, M. Yoshinaga, M. Kato, K. Hirota
    • Journal Title

      J. Am. Ceram. Soc 91

      Pages: 308-310

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Methane Oxidation on Perovskite-Type Ca(Mn_<1-x>Ti_x)O_<3-δ>2008

    • Author(s)
      H. Taguchi, et al.
    • Journal Title

      J. Am. Ceram. Soc. 91

      Pages: 308-310

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Metal-insulator transition in Pb_<2-x>Ln_xRu_2O_<7-δ> (Ln=Sm, Eu)compounds2008

    • Author(s)
      M. Kato, et al.
    • Journal Title

      Physica B 403

      Pages: 1315-1317

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ^<59>Co, ^<23>Na, and ^1H NMR Studies of Double-Layer Hydrated Superconductors NaCoO_2・yH_2O2008

    • Author(s)
      Y, Itoh, et al.
    • Journal Title

      Adv. in Solid State Phys. 47

      Pages: 329-341

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] In-Plane Anisotropy of the Magnetic Fluctuations in Na_xCoO_2・yH_2O2007

    • Author(s)
      C. Michioka, Y. Itoh, H. Ohta, M. Kato, K. Yoshimura
    • Journal Title

      J. Phys. Chem. Solid 68

      Pages: 2115-2118

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Metal-insulator transition in Na_xTiO_2 (x=0.20-0.25)2007

    • Author(s)
      H. Sakurai, M. Kato, K. Yoshimura, N. Tsujii, K. Kosuge
    • Journal Title

      Phys. Rev. B 75

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] In-plane anisotropy of the magnetic fluctuations in Na_xC_0O_2・yH_202007

    • Author(s)
      C.Michioka., et. al.
    • Journal Title

      Journal of Physics and Chemistry of Solids 68

      Pages: 2115-2118

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Metal-insulator transition in Na_xTiO_2(x=0.20-0.25)2007

    • Author(s)
      H.Sakurai., et. al.
    • Journal Title

      Physical Review B 75

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] 層状銅酸化物における磁気的相互作用の元素置換効果2009

    • Author(s)
      野木優作, 本江聡子, 加藤将樹, 廣田健
    • Organizer
      粉体粉末冶金協会
    • Place of Presentation
      京都工芸繊維大学(京都市)
    • Year and Date
      2009-06-02
    • Related Report
      2008 Final Research Report
  • [Presentation] 擬一次元磁気構造を有するレニウム酸化物Y_5Re_2O_<12>の合成と物性評価2009

    • Author(s)
      小池晴子, 加藤将樹, 廣田健
    • Organizer
      粉体粉末冶金協会
    • Year and Date
      2009-06-02
    • Related Report
      2008 Final Research Report
  • [Presentation] 中性子散乱実験によるCuSb_<2-x>Ta_xO_6の研究2008

    • Author(s)
      西正和, 加藤将樹, 廣田健
    • Organizer
      日本物理学会
    • Place of Presentation
      岩手大学(盛岡市)
    • Year and Date
      2008-09-20
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] Pb-Eu固溶系ルテニウムパイロクロア酸化物の物性2008

    • Author(s)
      加藤将樹, 今村哲也, 深津美穂, 廣田健, 道岡千城, 伊藤豊, 吉村一良
    • Organizer
      日本物理学会
    • Place of Presentation
      近畿大学(東大阪市)
    • Year and Date
      2008-03-24
    • Related Report
      2008 Final Research Report
  • [Presentation] Pb・Eu固溶系ルテニウムパイ白クロア酸化物の物性2008

    • Author(s)
      加藤 将樹
    • Organizer
      日本物理学会
    • Place of Presentation
      近畿大学(東大阪市)
    • Year and Date
      2008-03-24
    • Related Report
      2007 Annual Research Report
  • [Remarks]

    • URL

      http://wwwl.doshisha.ac.jp/~makato/index.html

    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://www1.doshisha.ac.jp/~makato/index.html

    • Related Report
      2007 Annual Research Report

URL: 

Published: 2007-04-01   Modified: 2016-04-21  

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