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Measurement of Spontaneous Strains of Conductive Strontium Titanates

Research Project

Project/Area Number 19540348
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics I
Research InstitutionHiroshima Institute of Technology

Principal Investigator

OZAKI Toru  Hiroshima Institute of Technology, 工学部, 教授 (90177212)

Co-Investigator(Kenkyū-buntansha) HOSOKAWA Shinya  広島工業大学, 工学部, 准教授 (30183601)
YAMAGUCHI Hirotaka  産業総合研究所, エレクトロニクス部門, 主任研究員 (80358233)
CHIKAURA Yoshinori  九州工業大学, 工学研究科, 教授 (40016168)
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2007: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsチタン酸ストロンチウム / 誘電体物性 / 半導体物性 / 光物性 / 低温物性 / 伝導性 / 構造相転移 / 強誘電性相転移 / 自発歪 / X線トポグラフィー / 発光スペクトル / X線蛍光ホログラフィー / 伝導電子 / ホール係数
Research Abstract

電子伝導性の(Sr_<1-x>La_x)TiO_3、ホール伝導性のSr(Ti_<1-x>Sc_x)O_3と絶縁性の(Sr_<1-x>Ca_x)TiO_3の構造相転移の自発歪の温度変化をX線トポグラフィーによって測定した。自発歪から得られたTiO_6八面体の自発回転角の飽和値は相転移温度とともに増加し、その関係は1本の曲線で表された。これらのことから、相転移に直接影響を与えているのは、伝導電子やホールではなく、置換または還元による結晶構造の変化であ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

    (10 results)

All 2009 2008 2007

All Journal Article (8 results) (of which Peer Reviewed: 2 results) Presentation (2 results)

  • [Journal Article] X-ray fluorescence holography of In_<1-x>Ga_xSb mixed crystal2009

    • Author(s)
      S.Hosokawa, T.Ozaki, N.Takata, N.Happo, H.Ikemoto, T.Shishido, K.Hayashi
    • Journal Title

      J. Cryst. Growth 311

      Pages: 978-981

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] X-ray fluorescence holography of In_<1-x>Ga_xSb mixed crystal2009

    • Author(s)
      S. Hosokawa, T. Ozaki, N. Takata, N. Happo, H. Ikemoto, T. Shishido, K. Hayashi
    • Journal Title

      J. Cryst. Growth 311

      Pages: 978-981

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] X-ray Topographic Measurement of Spontaneous Strain in Hole-Conductive Strontium Titanates (Proposal No.2007B1204)2008

    • Author(s)
      T.Ozaki, F.Inoue, N.Takata, N.Yamashita, Y.Ono, K.Kajiwara, Y.Chikaura, Y.Suzuki
    • Journal Title

      SPring-8 User Experiment Report, 2007B

      Pages: 0-0

    • URL

      https://user.spring8.or.jp/ja/expreport?act=detail&experimentReportId=4039

    • Related Report
      2008 Final Research Report
  • [Journal Article] X-Ray Topographic Measurement of Spontaneous Strain in Ferroelectric Ca_<0.05>Sr_<0.95>TiO_3 (Proposal No.2008A1296)2008

    • Author(s)
      T.Ozaki, F.Inoue, J.Tabara, H.Yamaguchi, K.Kajiwara, Y.Chikaura, Y.Suzuki
    • Journal Title

      SPring-8 User Experiment Report, 2008A

      Pages: 0-0

    • URL

      https://user.spring8.or.jp/ja/expreport?act=detail&experimentReportId=4992

    • Related Report
      2008 Final Research Report
  • [Journal Article] X-ray Topographic Measurement of Spontaneous Strain in Hole-Conductive Strontium Titanates (Proposal NO. 2007B1204)2008

    • Author(s)
      T. Ozaki, F. Inoue, N. Takata, N. Yamashita, Y. Ono, K. Kajiwara, Y. Chikaura, Y. Suzuki
    • Journal Title

      SPrina-8 User Experiment Report 2007B

      Pages: 4039-4039

    • Related Report
      2008 Annual Research Report
  • [Journal Article] X-Ray Topographic Measurement of Spontaneous Strain in Ferroelectric Ca_<0.05>Sr_<0.95>Tio_3 (Proposal NO. 2008A1296)2008

    • Author(s)
      T. Ozaki, F. Inoue, J. Tabara, H. Yamaguchi, K. Kajiwara, Y. Chikaura, Y. Suzuki
    • Journal Title

      SPring-8 User Experiment Report 2008A

      Pages: 4992-4992

    • Related Report
      2008 Annual Research Report
  • [Journal Article] X-Ray Topographic Measurement of Spontaneous Strain in Ferroelectric Ca_xSr_<1-x>TiO_3 (Proposal No.2007A1458)2007

    • Author(s)
      T.Ozaki, N.Yamashita, F.Inoue, N.Takata, Y.Ono, K.Kajiwara, K.Hashinoki, Y. Chikaura, Y.Suzuki
    • Journal Title

      SPring-8 User Experiment Report, 2007A

      Pages: 0-0

    • URL

      https://user.spring8.or.jp/ja/expreport?act=detail&experimentReportId=3222

    • Related Report
      2008 Final Research Report
  • [Journal Article] X-Ray Topographic Measurement of Spontaneous Strain in Ferroelectric Ca_χSr_<1-χ>TiO_32007

    • Author(s)
      T. Ozaki, et. al.
    • Journal Title

      SPring-8 User Experiment Report(Proposal No.2007A1458) (Spring-8Home Page)

    • Related Report
      2007 Annual Research Report
  • [Presentation] 低温でのX線照射によるSrTiO_3の発光2009

    • Author(s)
      尾崎 徹, 山口博隆, 井ノ上史也, 梶原堅太郎, 柴田 肇
    • Organizer
      日本物理学会第64回年次大会, 28pPSA-54(日本物理学会講演概要集, 第64巻, 第1号, 第4分冊, p.748)
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-28
    • Related Report
      2008 Final Research Report
  • [Presentation] 低温でのX線照射によるSrTio_3の発光(28pPSA-54)2009

    • Author(s)
      尾崎徹, 山口博隆, 井ノ上史也, 梶原堅太郎, 柴田肇
    • Organizer
      日本物理学会第64回年次大会
    • Place of Presentation
      立教大学
    • Year and Date
      2009-03-28
    • Related Report
      2008 Annual Research Report

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Published: 2007-04-01   Modified: 2020-05-15  

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