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High-pressure synthesis and anomalous properties of new skutterudite-type compounds including heavy lanthanide

Research Project

Project/Area Number 14204032
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 固体物性Ⅱ(磁性・金属・低温)
Research InstitutionMuroran Institute of Technology

Principal Investigator

SHIROTANI Ichimin  Muroran Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (90110692)

Co-Investigator(Kenkyū-buntansha) SAKINE Chihiro  Muroran Institute of Technology, Faculty of Engineering, Associate Professor, 工学部, 助教授 (60261385)
LEE Chul-ho  AIST, Energy Electronics institute, Researcher, 電力エネルギー研究部門, 研究員 (80358358)
MATSUHIRA Kazuyuki  Kyushu Institute of Technology, Faculty of Engineering, Research Associate, 工学部, 助手 (40312342)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥48,490,000 (Direct Cost: ¥37,300,000、Indirect Cost: ¥11,190,000)
Fiscal Year 2004: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2003: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Fiscal Year 2002: ¥35,880,000 (Direct Cost: ¥27,600,000、Indirect Cost: ¥8,280,000)
Keywordshigh-pressure synthesis / skutterudite compound / new material / electrical property / magnetic property / superconductivity / X-ray diffraction / neutron diffraction / スクッテルダイト / 金属リン化物 / 希土類化合物 / 強相関電子系 / 強磁性
Research Abstract

Filled skutterudite compounds LnT_4X_<12> (Ln=Lanthanide ; T=Fe,Ru,Os ; X=P,As,Sb) with space group Im-3 (T^5_h, #204) have attracted much attention because of wide variety of physical properties at low temperature, such as metal-insulator transition, multipole order, heavy-fermion behavior, non Fermi liquid behavior and exotic superconductivity. This remarkable feature is caused by a strong p-f hybridization effect, a unique band structure and an orbital degree of freedam due to f electron in Ln site with cubic symmetry.
We have prepared many skutterudites with lighter lanthanide at high temperatures and high pressures. However, few filled skutterudites with heavy lanthanide have been synthesized. We have succeeded to prepare for the first time new filled skutterudites with heavy lanthanide, LnT_4P_<12> (Ln=heavy lanthanide, including Y ; T=Fe,Ru,Os) by the high-pressure technique. New filled skutterudites LnFe_4P_<12> (Ln=Tb,Dy,Ho,Er,Tm,Yb,Lu and Y) were prepared and studied. LnFe_4P_<12> (Ln=Gd,Tb,Dy,Ho,Er) are ferromagnets. YFe_4P_<12> and LuFe_4P_<12> are superconductors. Tm, Yb compounds are paramagnetic down to low temperature. For Ru system, LfRu_4P_<12> (Ln=Gd,Tb,Y) were prepared under high pressure. GdRu_4P_<12> and TbRu_4P_<12> are antiferromagnets. YRu_4P_<12> is a new superconductor (transition temperature Tc=9K). For Os system, new filled skutterudites LnOs_4P_<12> (Ln=Sm,Eu,Gd,Tb,Dy,Ho and Y) were prepared and studied. LnOs_4P_<12> (Ln=Eu,Gd,Tb) are ferromagnets. SmOs_4P_<12> is an antiferromagnet. Dy, Ho compounds are paramagnetic down to low temperature. YOs_4P_<12> is a new superconductor.
In this work, we found 16 new filled skuterudites and 4 new superconductors with skutterudite-type structure.

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (23 results)

All 2005 2004 2003 Other

All Journal Article (13 results) Book (1 results) Publications (9 results)

  • [Journal Article] Magnetic properties of TbRu_4P_<12> studied by neutron diffraction2005

    • Author(s)
      K.Kihou et al.
    • Journal Title

      Physica B 359-361

      Pages: 859-861

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Specific heat of filled skutterudite-type compound TbRu_4P_<12> in magnetic fields2005

    • Author(s)
      C.Sekine et al.
    • Journal Title

      Physica B 359-361

      Pages: 856-858

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Specific heat study on Sm-based filled skutterudite phosphides SmT_4P_<12> (T=Fe, Ru and Os)2005

    • Author(s)
      K.Matsuhira et al.
    • Journal Title

      J.Phys.Soc.Jpn. 74

      Pages: 1030-1035

    • NAID

      110001979485

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Specific heat study on Sm-based filled skutterudite phosphides SmT_4P_<12> (T=Fe,Ru and Os)2005

    • Author(s)
      K.Matsuhira et al.
    • Journal Title

      J.Phys.Soc.Jpn. 74

      Pages: 1030-1035

    • NAID

      110001979485

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] High-pressure synthesis, electrical and magnetic propertyes of new filled skutterudites LnOs_4P_<12> (Ln=Eu,Gd,Tb,Dy,Y)2004

    • Author(s)
      K.Kihou et al.
    • Journal Title

      Material Research Bulletin 39

      Pages: 317-325

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Charge-density-wave ordering in the metal-insulator transition compound PrRu_4P_<12>2004

    • Author(s)
      C.H.Lee et al.
    • Journal Title

      Phys.Rev.B 70

      Pages: 1531051-1531054

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Charge-density-wave ordering in the metal insulator transition compound PrRu_4P_<12>2004

    • Author(s)
      C.H.Lee et al.
    • Journal Title

      Phys.Rev.B 70

      Pages: 1531051-1531054

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] High-pressure synthesis, electrical and magnetic properties of new filled skutterudites LnOs_4P_<12> (Ln=Eu,Gd,Tb,Dy,Ho,Y)2004

    • Author(s)
      K.Kihou et al.
    • Journal Title

      Material Research Bulletin 39

      Pages: 317-325

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Thermoelectric properties of Ce based filled skutteudite phosphides2004

    • Author(s)
      R.Giri et al.
    • Journal Title

      電気学会論文誌A 124

      Pages: 617-623

    • Related Report
      2004 Annual Research Report
  • [Journal Article] X-ray study with synchrotron radiation for P- and Sb-based skutterudite compounds at high pressures2004

    • Author(s)
      I.Shirotani et al.
    • Journal Title

      J.Phys ; Condensed Matter 16

      Pages: 7853-7862

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Systematic high-pressure synthesis of new filled skutterudites with heavy lanthanide LnFe_4P_<12> (Ln=heavy lanthanide, including Y)2003

    • Author(s)
      I.Shirotani et al.
    • Journal Title

      J.Solid State Chem. 174

      Pages: 32-34

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Magnetic properties of TbRu_4P_<12> studied by neutron diffraction

    • Author(s)
      K.Kihou et al.
    • Journal Title

      Physica B (in press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Charge-density-wave ordering in the metal-insulator transition compound PrRu_4P_<12>

    • Author(s)
      C.H.Lee et al.
    • Journal Title

      Phys.Rev.B (in press)

    • Related Report
      2004 Annual Research Report
  • [Book] 化学便覧(改訂5版)基礎編I、高圧実験用材料2004

    • Author(s)
      城谷 一民
    • Publisher
      丸善
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Publications] I.Shirotani et al.: "Superconductivity of new filled skutterudite YFe_4P_<12> prepared at high pressure"J.Phys.Condens.Matter. 15. S2201-S2205 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] I.Shirotani et al.: "Systematic high-pressure synthesis of new filled skutterudites with heavy lanthanide, LnFe_4P_<12> (Ln=heavy lanthanide, including Y)"J.Solid State Chem.. 174. 32-34 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 関根ちひろ, 城谷一民: "スクッテルダイト化合物の高圧合成と物性"高圧力の科学と技術. 13. 176-182 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] R.Giri et al.: "Magnetic properties of Sm-based filled skutteudite phosphides"Physica B Condensed Matter. 329-333. 458-459 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] C.H.Lee et al.: "Single Crystal growth of skutterudite CoP_3 under high pressure"J.Crystal Growth. 263. 358-362 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Kihou et al.: "High-pressure synthesis, electrical and magnetic properties of new filled skutteudites LnOs_4P_<12> (Ln=Eu,Gd,Tb,Dy,Ho,Y)"Materials Research Bulletin. 39. 317-325 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] I.Shirotani: "Superconductivity of new filled skutterudite YFe_4P_<12> prepared at high pressure"Journal of Physics : Condensed Matter. (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] R.Giri: "La doping effect in thermoelectric properties of skutterudite compound CeRu_4P_<12>"Proceedings of 21^<st> International conference on thermoelectronics. 60-63 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] R.Giri: "Thermoelectric properties of Sm and Ce based filled skutterudite compounds"室蘭工業大学紀要. 52. 133-140 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2020-05-15  

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