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Phenomena of elementary excitation in rear-earth materials under pressure, magnetic field at low temperatures

Research Project

Project/Area Number 10440104
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 固体物性Ⅱ(磁性・金属・低温)
Research InstitutionSaitama University (2001)
The University of Tokyo (1998-2000)

Principal Investigator

MORI Nobuo  Faculty of Science, Department of Physics, Saitama University, Professor, 理学部, 教授 (40000848)

Co-Investigator(Kenkyū-buntansha) 三田村 裕幸  東京大学, 物性研究所, 助手 (60282604)
竹下 直  東京大学, 物性研究所, 助手 (60292760)
後藤 恒昭  東京大学, 物性研究所, 教授 (30005962)
森 多美子  東京大学, 物性研究所, 助手 (70174373)
Project Period (FY) 1998 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥12,900,000 (Direct Cost: ¥12,900,000)
Fiscal Year 2001: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2000: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1999: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 1998: ¥6,200,000 (Direct Cost: ¥6,200,000)
KeywordsRare-earth compounds / Valence fluctuation / Valence transition / Pressure-induced phenomena / Quadrupolar ordering / Magnetic field-induced phenomena / Metamagnetism / Electronic heat capacity / 低温・超高圧 / 輪送現象 / 相図 / TmTe / TmSe / 輸送現象 / CeP_<0.9> N_<0.1> / CeCu_2 / (Si_<1-x> Ge_x)_2 / TmS、 / ホール係数 / 磁気抵抗 / SmS / CeSb
Research Abstract

The purpose of this project is to search various materials that include charge fluctuating rare-earth elements for unusual phenomena under high pressure and high magnetic field at low temperatures.
1. A high pressure apparatus for in-situ X-ray diffraction and electrical resistance measurements was developed using cubic anvils, which works at low temperatures from 300 K down to 7K under pressure of 10GPa.
2. Hydrostatic and uniaxial pressure apparatuses combined with a SQUID magnetometer were made for magnetization measurements under pressure. Those work from 300K to 1.5K under pressure up to 1GPa and 0.5GPa, respectively.
3. A technique for precise magneto-transport measurements at low temperatures under pressure up to 8GPa was established by applying a modified Bridgman anvil.
4. A technique for XAFS under high pressure was developed for measurements of valence transition using a conventional X-ray generator combined with diamond anvils.
5. By using above mentioned apparatus, we observed many unprecedented phenomena in the transport and magnetic properties of various materials, which include one of rare-earth elements, Ce, Pr, Eu, Sm, Tm, Yb and Lu, as follows : CeP, Ce_<0.9>La_<0.1>P, CeP_<0.9>N_<0.1>, Ce_2Fe_<17>, CePtGa, Ces_3SnC, Ce_3PbC, Ce_3Pd_<20>Si_6, Ce_<0.5>La_<0.5>B 6, CeNi, CeSbNi_x, PrInAg_2, PrCu_2, EuNi_2(Ge_<1-X>Si_x)_2, SmS, TmTe, TmSe, YbAs, YbInCu_4, Yb_4As_3, Yb_4(As_<1-x>Sb_x)_3, Lu(Co_<1-X>Al_x)_2.

Report

(5 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (33 results)

All Other

All Publications (33 results)

  • [Publications] H.C.Kim: "Pressure-dependent studies of CeSbNix(0<x<0.35)"Phys. Rev.. B65. 014406-1-7 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S.Takayanagi: "Pressure effect on the specific heat of CeNi single crystal"J. Phys. Soc. Jpn.. 70. 753-755 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T Hashiguchi: "Pressure effect on transport properties and specific heat of Kondo compound Ce_3Pd_<20>Si_6"J. Phys. Soc. Jpn.. 69. 667-670 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Ohashi: "The valence fluctuation state of Tm monochalcogenides under high pressure"J Magn. Magn. Mater.. 226-230. 158-160 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Tomita: "Antiferr-quadrupolar ordering in TmTe under high magnetic fields and high pressures"Physica. B281&282. 574-575 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] N.Mori: "A technique for precise magneto-transport measurements at low temperature under pressure up to 8GPa"Physica. B265. 263-267 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H. C. Kim, S. Lee, J. G. Park, H. C. Ri, M. H. Jung, T. Takabatake, D. T. Adroja, T. Tomita, T. Goto, N. Mori: "Pressure-dependent studies of CeSbNix(0<x<0.35)"Phys. Rev. B65. 014406-1-7 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Takayanagi, S. Arai, R. Settai, Y. Oonuki, N. Mori: "Pressure effect on the specific heat of CeNi single crystal"J. Phys. Soc. Jpn.. 70. 753-755 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Hashiguchi, N. Takeda, J. Kitagawa, N. Mori: "Pressure effect on transport properties and specific heat of Kondo compound Ce_3Pd_<20>Si_6"J. Phys. Soc. Jpn.. 69. 667-670 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Ohashi, N. Takeshita, H. Mitamura, T. Matsumura, T. Suzuki, T. Mori, N. Mori: "The valence fluctuation state of Tm monochalcogenides under high pressure"J. Magn. Magn. Mater.. 226-230. 158-160 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Tomita, T. Goto, S. Hane, M. Ohashi, T. Matsumura, N. Mori, T. Suzuki: "Antiferr-quadrupolar ordering in TmTe under high magnetic fields and high pressures"Physica B. 281&282. 574-575 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] N. Mori, T. Nakanishi, M. Ohashi, N. Takeshita, H. Goto, S. Yomo.Y. Okayama: "A technique for precise magneto-transport measurements at low temperature under pressure up to 8GPa"Physica B. 265. 263-267 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.C.Kim: "Pressure dependent studies of CeSbNi_x"Phys.Rev.. B65. 014406 1-7 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Sigeru Takayanagi: "Pressure Effect on the Specific Heat of CeNi Single Crystal"J.Phys.Soc.Jpn.. 70. 753-755 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Hane: "Magnetic phase diagram of Ce_<0.5>La_<0.5>B_6"J.Magn.Magn.Materials. 226-230. 98-100 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] A.Mitsuda: "Field-induced valence transition under high pressure in EuNi_2(Ge_<1-x>Si_x)_2"J.Magn.Magn.Materials. 226-230. 167-169 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Ohashi: "The valence fluctuation state of Tm monochalcogenides under high pressure"J.Magn.Magn.Materials. 226-230. 158-160 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Tsuneaki Goto: "Itinerant electron metamagnetism and peculiar magnetic properties observed in 3d and 5f intermetallics"Physica. B300. 167-185 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Nao Takeshita: "Pressure Induced Valence Transition of EuNi2Ge2"Science and Technology of High Pressure (Proceedings of AIRAPT-17, Honolulu, Hawai,). 1. 445-447 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] M,Ohashi: "Physical properties of Tm monochalcogenides under pressure"Physica B,. 259-261. 326-328 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Okayama: "Pressure effect on the magnetic ordering in YbAs"Physica B,. 259-261. 148-149 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] T Hashiguchi,: "Pressure Effect on Transport Properties and Specific Heat of Kondo Compound Ce_3Pd_2OSi_6"J.Phys.Soc.Jpn.,. 69. 667-670 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Msashi Ohashi: "Physical properties of TmS under pressure"Phisica B. 281-282. 264-266 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Mitamura: "Precise resistivity measurement in PrInAg_2 down to 50mK"Phisica B. 284-288. 1341-1342 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] N.Takeshita: "Electricalresistivities under high pressurein CeP_<0.9>N_<0.1>"PhysicaB. 予定 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Tomita: "Antiferro-quadrupolar ordering in TmTe under high magneticfields and high pressures"PhysicaB. 予定 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Ohashi: "Physical property of TmS under high pressure"PhysicaB. 予定 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Ohashi: "Physical property of Tm monochalcogenides under pressure"PhysicaB. 259-261. 326-328 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] N.Mori: "A technique for precise magneto-transport measurements at low temperatures under pressure up to 8GPa"PhysicaB. 265. 263-267 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Ohashi: "Physical Properties of SmS Metallic Phase at Low temperature" Rev.High Pressure Sci.Technol.Vol.7. 611-613 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] N.Mori: "A technique for precise magneto-transport measurements at low temperatures under pressure up to 8 GPa" Physica B in press.(1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Ohashi: "Physical properties of Tm monochalcogenides under pressure" Abstracts of the International conference on Strongly Correlated Electron Systems (July 15-18,1998-Paris). 41 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 大橋政司: "高圧下におけるTmモノカルコゲナイドの磁性と伝導" Meeting Abstracts of the Physical Society of Japan. 53・2 Part3. 539 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2020-05-15  

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