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Magnetism of Uranium compound under Pressure studied by the X-ray Magnetic Diffraction

Research Project

Project/Area Number 11440114
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 InstitutionGunma University (2001)
Himeji Institute of Technology (1999-2000)

Principal Investigator

ITO Masahisa  Gunma University, Engineering, Professor, 工学部, 教授 (90124362)

Co-Investigator(Kenkyū-buntansha) AKAHAMA Yuichi  Himeji Institute of Technology, Science, Research Associate, 理学部, 助手 (90202522)
ITOH Fumitaka  Gunma University, Engineering, Professor, 工学部, 教授 (60005907)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥15,900,000 (Direct Cost: ¥15,900,000)
Fiscal Year 2001: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2000: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1999: ¥13,700,000 (Direct Cost: ¥13,700,000)
KeywordsX-ray magnetic diffraction / X-ray magnetic scattering / synchrotron radiation / ferromagnet / high pressure / uranium / spin magnetic moment / orbital magnetic moment / フェリ磁性体 / 磁気形状因子 / 超伝導磁石
Research Abstract

We have developed an experimental system of X-ray magnetic diffraction under multiple extreme condition (low temperature(4.2K)・high magnetic field(6T)・high pressure(20GPa)) on BL39XU at the SPring-8, by utilizing a super-conducting magnet and a diamond-anvil cell. We have developed a new method of X-ray magnetic diffraction by switching helicity of synchrotron radiation utilizing a phase plate.
In the first experiment of X-ray magnetic diffraction with a super-conducting magnet we could enclosed a very small crystal of UTe (〜200 μm in size) in the anvil cell, which was installed to the magnet. We succeeded in measuring the lattice constant of UTe at 4.2K under ambient pressure. However, in this experiment, leak magnetic field from the magnet turned out to alter the electron-beam orbit in the storage ring and change the intensity of synchrotron radiation in the configuration of the magnetic field direction perpendicular to the synchrotron beam. So this configuration was prohibited, and the LS separation by the X-ray magnetic diffraction could not be performed. We tried the X-ray MCD (magnetic circular dichroizm) measurement of Fe and Ni under pressure, which could be made only in the parallel configuration. For Ni, the observed curve of MCD signal vs. pressure was reproduced well by the curve of the orbital moment vs. pressure by the band calculation. This result suggested that the MCD signal is strongly correlated with the orbital moments.

Report

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

    (39 results)

All Other

All Publications (39 results)

  • [Publications] 伊藤 正久: "放射光X線による磁気回折の研究"日本結晶学会誌. 44・6. 365-374 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 伊藤 正久: "X線磁気回折"日本放射光学会誌. 10・4. 277-285 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Hiroshi Maruyama: "Polarization tunability and analysis for obserbing magnetic effects on BL39XU at SPring-8"Journal of Synchrotron Radiation. 6・6. 1133 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Hayato Miyagawa: "Orbital and spin moments in SmFe_2 studied by means of white-x-ray magnetic diffraction"Journal of Physics : Condensed Matter. 14・41. 9525-9534 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Hiromichi Adachi: "Anisotropic spin form factor of SmAl_2"Physical Review B. 63・5. 054406 1-054406 5 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahisa Ito: "Temperature Variation of Spin-and Orbital-magnetic Form Factor of Holmium Iron Garnet by X-ray Magnetic Diffraction"SPring-8 Research Frontiers. 1999/2000. 33-35 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Naoki Ishimatsu: "X-ray magnetic circular dichroism studies of Fe_4N under high-pressure"Nuclear Instruments and Methods in Physics Research A. 467/468・2. 1061-1064 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 圓山裕: "X線磁気散乱・吸収実験ステーション(BL39XU)"日本結晶学会誌. 42・1. 76-86 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahisa Ito: "White X-Ray Magnetic Diffraction of Ferromagnets at BL-3C3"Photon Factory Activity Report High lights and Facility Report. 18・A. 27-28 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahisa Ito: "Orbital-and spin-magnetic form factor of ferromagnetic YTiO_3 measured by the X-ray magnetic diffraction"Photon Factory Activity Report. 19・B. 76 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahisa Ito: "A Measurement of the lattice constant of uranium telluride at the liquid-helium temperature"SPring-8 User Experiment Report. 8. 157 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Naoki Ishimatsu: "High-pressure XMCD measurements of nickel up to 48 GPa"SPring-8 User Experiment Report. 9. 185 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahisa Ito: "X-ray Magnetic Diffraction of Ferromagnets with Synchrotron Radiation"Journal of the Crystallographic Society of Japan. 44-6. 365-374 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahisa Ito: "X-ray Magnetic Diffraction"Journal of the Japanese Society for Synchrotron Radiation Research. 12-4. 277-285 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Hiroshi Maruyama: "Polarization tunability and analysis for obserbing magnetic effects on BL39XU at SPring-8"Journal of Synchrotron Radiation. 6-6. 1133-1137 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Hayato Miyagawa: "Orbital and spin moments in SmFe_2 studies by means of white-x-ray magnetic diffraction"Journal of Physics: Condensed Matter. 14-41. 9525-9535 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Hiromichi Adachi: "Anisotropic spin form factor of SmAl_2"Physical Review B. 63-5. 054406-1-5 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahisa Ito: "Temperature Variation of Spin- and Orbital-magnetic Form Factor of Holmium Iron Garnet by X-ray Magnetic Diffraction"SPring-8 Research Frontiers. 1999/2000. 33-35 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Naoki Ishimatsu: "X-ray magnetic circular dichroism studies of under high-pressure"Nuclear Instruments and Methods in Physics Fe_4N Research A. 467/468・2. 1061-1064 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Maruyama Hiroshi: "X-ray Magnetic Scattering and Absorption Experiments(BL39XU)"Journal of the Crystallographic Society of Japan. 42-1. 76-86 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahisa Ito: "White X-Ray Magnetic Diffraction of Ferromagnets at BL-3C3"Photon Factory Activity Report High lights and Facility Report. 18-A. 27-28 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Masahisa Ito: "Orbital- and spin-magnetic form factor of ferromagnetic YTiO_3 measured by the X-ray magnetic diffraction"Photon Factory Activity Report. 19-B. 76 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Mashisa Ito: "A Measurement of the lattice constant of uranium telluride at the liquid-helium temperature"SPring-8 User Experiment Report. 8. 157 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Naoki Ishimatsu: "High-pressure XMCD measurements of nickel up to 48 GPa"SPring-8 User Experiment Report. 9. 185 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Ito: "Temperature Variation of Spin and Orbital-Magnetic Form Factor of Holmium Iron Garnet by X-ray Magnetic Diffraction"SPring-8 Research Frontiers. 1999/2000. 33-35 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Ito: "Trial Use of A Super-Conducting Magnet in X-ray Magnetic Diffraction Maesurements"SPring-8 User Experiment Report 2001A. No.7. 139 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] N.Ishimatsu: "XMCD measurements of iron and nickel at K-edge under high presure"SPring-8 User Experiment Report 2001A. No.7. 143 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] N.Ishimatsu: "MCD measurements of Fe_4N at Fe K-edge under high pressure Part II"SPring-8 User Experiment Report 2001A. No.6. 120 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Ito: "White X-ray Magnetic Diffraction of Ferromagnets at BL-3C_3"Photon Factory Activiy Report 2000 : Part A High Lights and Facility Report. #18. 27-28 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Ito: "Spin-Magnetic Form Factor of Ferromagnetc YTiO_3 measured by the X-ray Magnetic Diffraction"Photon Factory Activity Report 2000 : Part B User's Report. #18. 150 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Ito: "Development of a High-Count-Rate APD Detector System Having Energy Resolution with a Flash ADC for White X-ray Magnetic Diffraction Measurements"Photon Factory Activity Report 2000 : Part B User's Report. #18. 283 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] N.Ishimatsu: "X-ray magnetic circular dichroism studies of Fe_4N under high-pressure"Nucl.Instrum.Methods in Phys.Res.A. 467-468/Part2. 1061-1064 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Kichimoto: "A Cooled Avalanche Photodiode Detector for X-ray Magnetic Diffraction Experiments"Nucl.Instrum.Methods in Phys.Res.A. 467-468/Part2. 1171-1174 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Masahisa ITO: "Temperature Variation of The Spin-and Orbital Magnetic Moment of Holmium Iron Garnet by X-ray Magnetic Diffraction"SPring-8 User Experimental Report. 4. 158 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Masahisa ITO: "Direct Observation of Magnetic Moments Reversal of Holmium Iron Garnet by X-ray Magnetic Diffraction"SPring-8 User Experimental Report. 5. 246 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 圓山裕: "X線磁気散乱・吸収実験ステーション(BL39XU)"日本結晶学会誌. 42. 76-86 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hiromichi ADACHI: "Anisotropic Spin Form Factor of SmAl_2"Physical Review B. 63. 54406-1-54406-5 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Masahisa ITO: "Spin and Orbital Magnetic Form Factors of Dysprosium Measured by X-ray Magnetic Diffraction"Photon Factory Activity Report. 17. 95 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 伊藤正久: "X線磁気回折=放射光X線による強磁性体の磁気形状因子測定="日本放射光学会誌. 12・4. 277-285 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2020-05-15  

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