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中性子散乱によるラットリングの可視化と動的応答の探索

Publicly Offered Research

Project AreaEmergence of Heavy Electrons and Their Ordering
Project/Area Number 21102524
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionJapan Atomic Energy Agency

Principal Investigator

金子 耕士  独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究副主幹 (30370381)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2010: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2009: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Keywords物性実験 / 量子ビーム / 強相関電子系 / 低温物性 / ラットリング
Research Abstract

スクッテルダイトを代表とするカゴ状化合物において現れる大振幅振動について、詳細な描像及びその物性との関連を中性子散乱により明らかにすることを目的として、研究を進めた。今年度は新たな系として、同じカゴ状構造をもつI型クラスレート化合物Ba_8Ga_<16>Sn_<30>について実験を行った。マキシマムエントロピー法を用いた解析の結果、Ba_8Ga_<16>Sn_<30>では、スクッテルダイト化合物とは対照的に、Baイオンは、オフセンターを安定位置とする巨大振幅の非調和振動を行っている事を明らかにした。温度変化から物性との関連を明らかにする事を目指し、解析に取り組んでいる。さらに、β-パイロクロア化合物についても実験に着手した。CsOs_2O_6について、国内の単結晶中性子回折実験としては最小の1mm角以下の単結晶で測定を行い、構造解析が行える100反射以上の強度データの測定に成功した。マキシマムエントロピー法を用いたβ-パイロクロアにおけるラットリング振動の可視化に向けて、解析を進めている。スクッテルダイトに加え、新たな系の結果が得られた事で、非調和大振幅振動の発現条件及び物性との関連について、より普遍的な理解が得られる事が期待される。
さらなる展開に向けて、巨大振幅振動により誘起される動的な応答の探索及び、より微小単結晶での測定実現を目指し、J-PARC/MLFにおいて単結晶構造解析装置の建設を進めた。特に今年度、装置の鍵となる、低温で駆動可能なピエゾモーターを使用したゴニオメーターを製作し、実現可能である事を確認した。これまで不可能だった1mm角以下の結晶での構造解析や、逆空間での高効率な信号探索にむけて、礎となる重要な進展が得られた。

Report

(2 results)
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (36 results)

All 2011 2010 2009

All Journal Article (11 results) (of which Peer Reviewed: 11 results) Presentation (25 results)

  • [Journal Article] Hybridization of magnetic excitations between quasi-one-dimensional spin chain and spin dimers in Cu_3Mo_2O_9 observed using inelastic neutron scattering2011

    • Author(s)
      H.Kuroe, T.Hamasaki, T.Sekine, M.Hase, K.Oka, T.Ito, H.Eisaki, K.Kaneko, et al
    • Journal Title

      Phys.Rev.B

      Volume: 83

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic Structure Determination of CeT_2Al_<10> (T=Ru and Os) : Single Crystal Neutron Diffraction Studies2011

    • Author(s)
      H.Kato, R.Kobayashi, T.Takesaka, T.Nishioka, M.Matsumura, K.Kaneko, et al
    • Journal Title

      J.Phys.Soc.Jpn.

      Volume: 80

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Neutron Scattering Study on U-Dichalcogenides2010

    • Author(s)
      N.Metoki, K.Kaneko, et al
    • Journal Title

      IOP Conference Series : Materials Science and Engineering

      Volume: 9

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 単結晶中性子回折によるスクッテルダイトの構造解析2010

    • Author(s)
      金子耕士
    • Journal Title

      RADIOISOTOPES 59

      Pages: 249-256

    • NAID

      10026244700

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic Transitions in YbCo_2Si_22010

    • Author(s)
      金子耕士 et al.
    • Journal Title

      J.Phys.: Conf.Ser. 200

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Instability of Magnons in Two-Dimensional Antiferromagnets at High Magnetic Fields2010

    • Author(s)
      T.Masuda, S.Kitaoka, S.Takamizawa, N.Metoki, K.Kaneko et al.
    • Journal Title

      Phys.Rev.B 81

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pronounced Basal Plane Anisotropy in the Magnetoresistance of YbCo_2Si_22010

    • Author(s)
      N.Mufti, C.Klingner, L.Pedrero, M.Brando, K.Kaneko et al.
    • Journal Title

      Physica Status Solidi(b) 247

      Pages: 743-746

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic Order and Interaction in Garnet Lattice Antiferromagnets AgCa_2M_2V_3O_<12>(M=Mn, Co, Ni)and NaPb_2Mn_2V_3O_<12>2010

    • Author(s)
      N.Terada, H.S.Suzuki, H.Kitazawa, K.Kaneko et al.
    • Journal Title

      J.Phys.: Conf.Ser. 200

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Visualizing Rattling in PrOs_4Sb_<12> by Single Crystal Neutron Diffraction and Maximum-Entropy Analysis2009

    • Author(s)
      金子耕士 et al.
    • Journal Title

      Journal of the Physical Society of Japan 78

    • NAID

      10025962644

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Excitation Spectrum of PrOs_4Sb_<12> under a Magnetic Field2009

    • Author(s)
      S.Raymond, K.Kuwahara, K.Kaneko et al.
    • Journal Title

      J.Phys.: Condens.Matter 21

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Neutron Diffraction Texture Analysis for α-Al_2O_3 Oriented by High Magnetic Field and Sintering2009

    • Author(s)
      N.Terada, H.S.Suzuki, T.S.Suzuki, H.Kitazawa, Y.Sakka, K.Kaneko et al.
    • Journal Title

      J.Phys.D : Appl.Phys. 42

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] 中性子で見るTbCoGa_5の逐次相転移2011

    • Author(s)
      金子耕土, 他
    • Organizer
      日本物理学会第66回年次大会
    • Place of Presentation
      新潟大学
    • Year and Date
      2011-03-28
    • Related Report
      2010 Annual Research Report
  • [Presentation] 国内外の中性子実験施設における強磁場環境の現状について2011

    • Author(s)
      金子耕土
    • Organizer
      J-PARC・MLFにおける中性子強磁場実験環境、高圧実験環境についての検討会
    • Place of Presentation
      いばらき量子ビーム研究センター
    • Year and Date
      2011-03-08
    • Related Report
      2010 Annual Research Report
  • [Presentation] Neutron Triple-Axis Spectrometers in the Research Reactor JRR-32011

    • Author(s)
      K.Kaneko, et al
    • Organizer
      6th Workshop on Speciation, Techniques, and Facilities for Radioactive Materials at Synchrotron Light Sources and Other Quantum Beam Sources (AnXAS 2011)
    • Place of Presentation
      Harima, Japan
    • Year and Date
      2011-03-02
    • Related Report
      2010 Annual Research Report
  • [Presentation] 配列ナノ空間物質の中性子散乱による研究2011

    • Author(s)
      金子耕土, 他
    • Organizer
      JRR-3改造20周年記念シンポジウム-研究用原子炉JRR-3の利用成果と今後の展開-
    • Place of Presentation
      日本科学未来舘
    • Year and Date
      2011-02-28
    • Related Report
      2010 Annual Research Report
  • [Presentation] Effect of magnetic field in non-centrosymmetric heavy-fermion superconductor CePt_3Si2011

    • Author(s)
      K.Kaneko, et al
    • Organizer
      The International Workshop on Neutron Applications on Strongly Correlated Electron Systems 2011 (NASCES11)
    • Place of Presentation
      Ibaraki, Japan
    • Year and Date
      2011-02-24
    • Related Report
      2010 Annual Research Report
  • [Presentation] One aspect of magnetism and superconductivity in heavy-fermions : Neutron diffraction study2011

    • Author(s)
      K.Kaneko, et al
    • Organizer
      The 1st ASRC International Workshop "New Approach to the exotic phases of actinides compounds under unconventional experimental conditions"
    • Place of Presentation
      Ibaraki, Japan
    • Year and Date
      2011-02-17
    • Related Report
      2010 Annual Research Report
  • [Presentation] 配列ナノ空間物質の単結晶中性子構造解析2011

    • Author(s)
      金子耕士
    • Organizer
      特定領域「ユビキタス元素戦略」第7回領域会議
    • Place of Presentation
      大阪大学
    • Year and Date
      2011-01-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] Future perspective of studies of heavy-fermion compounds by polarised neutron2011

    • Author(s)
      K.Kaneko
    • Organizer
      ICC-IMR International Workshop "Novel Material Science using Polarized Neutron"
    • Place of Presentation
      Sendai, Japan
    • Year and Date
      2011-01-06
    • Related Report
      2010 Annual Research Report
  • [Presentation] 空間反転対称性の欠如したCeCoGe_3における多段磁気転移2010

    • Author(s)
      金子耕土, 他
    • Organizer
      日本中性子科学会第10回年会
    • Place of Presentation
      東北大学
    • Year and Date
      2010-12-10
    • Related Report
      2010 Annual Research Report
  • [Presentation] Unusual magnetic field response in non-centrosymmetric heavy-fermion superconductor CePt_3Si2010

    • Author(s)
      K.Kaneko
    • Organizer
      International Workshop "Superconductivity Explored by Neutron Scattering Experiments (SENSE2010)"
    • Place of Presentation
      Grenoble, France
    • Year and Date
      2010-10-23
    • Related Report
      2010 Annual Research Report
  • [Presentation] Sample environments at Japan Atomic Energy Agency2010

    • Author(s)
      K.Kaneko
    • Organizer
      6th International Workshop on Sample Environment at Neutron Scattering Facilities (SE@NSF)
    • Place of Presentation
      Munchen, Germany
    • Year and Date
      2010-09-29
    • Related Report
      2010 Annual Research Report
  • [Presentation] Neutron scattering study on rattling in filled-skutterudite compounds2010

    • Author(s)
      K.Kaneko, et al
    • Organizer
      The International Conference on Heavy Electrons 2010 (ICHE2010)
    • Place of Presentation
      Tokyo Metropolitan Univ.
    • Year and Date
      2010-09-20
    • Related Report
      2010 Annual Research Report
  • [Presentation] 中性子散乱による配列ナノ空間物質の構造解析2010

    • Author(s)
      金子耕士
    • Organizer
      特定領域「ユビキタス元素戦略」第6回領域会議
    • Place of Presentation
      名古屋大学
    • Year and Date
      2010-05-30
    • Related Report
      2010 Annual Research Report
  • [Presentation] 特殊環境微小単結晶中性子構造解析装置2010

    • Author(s)
      田村格良, 他
    • Organizer
      第1回MLFシンポジウム
    • Place of Presentation
      いばらき量子ビームセンター
    • Year and Date
      2010-03-31
    • Related Report
      2009 Annual Research Report
  • [Presentation] 偏極中性子散乱装置建設計画2010

    • Author(s)
      大山研司, 他
    • Organizer
      第1回MLFシンポジウム
    • Place of Presentation
      いばらき量子ビームセンター
    • Year and Date
      2010-03-31
    • Related Report
      2009 Annual Research Report
  • [Presentation] YbCo2Si2における磁気転移2010

    • Author(s)
      金子耕士, 他
    • Organizer
      日本物理学会2010年年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-21
    • Related Report
      2009 Annual Research Report
  • [Presentation] 希土類化合物における複雑な磁気秩序の検出2010

    • Author(s)
      金子耕士
    • Organizer
      茨城県中性子利用促進研究会「磁性材料合同研究会」
    • Place of Presentation
      いばらき量子ビームセンター
    • Year and Date
      2010-02-22
    • Related Report
      2009 Annual Research Report
  • [Presentation] Peculiar Magnetic Diffuse Scattering in Antiferroquadrupolar System RB2C22010

    • Author(s)
      金子耕士 et al.
    • Organizer
      International Workshop on Single-Crystal Diffraction with Polarised Neutrons, Flipper 2010
    • Place of Presentation
      Grenoble, France
    • Year and Date
      2010-01-27
    • Related Report
      2009 Annual Research Report
  • [Presentation] 単結晶中性子回折によるラットリングの可視化2009

    • Author(s)
      金子耕士
    • Organizer
      第9回中性子科学会
    • Place of Presentation
      いばらき量子ビームセンター
    • Year and Date
      2009-12-09
    • Related Report
      2009 Annual Research Report
  • [Presentation] 単結晶中性子回折を用いたカゴ状化合物の精密構造解析2009

    • Author(s)
      金子耕士, 他
    • Organizer
      平成21年度大学公開特別講座
    • Place of Presentation
      広島大学
    • Year and Date
      2009-10-29
    • Related Report
      2009 Annual Research Report
  • [Presentation] 空間反転対称性を持たないCeCoGe3における多段磁気転移2009

    • Author(s)
      金子耕士, 他
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-26
    • Related Report
      2009 Annual Research Report
  • [Presentation] Unusual Magnetic Field Response in Non-Centrosymmetric Heavy-Fermion Superconductor CePt3Si2009

    • Author(s)
      金子耕士 et al.
    • Organizer
      9th International Confernce on Materials and Mechanisms of Superconductivity
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      2009-09-08
    • Related Report
      2009 Annual Research Report
  • [Presentation] Visualizing rattling in filled-skutterudite compounds2009

    • Author(s)
      金子耕士
    • Organizer
      International Symposium for Young Scientists on Physics of Strongly Correlated Electrons ISYS-PSCE
    • Place of Presentation
      Sapporo, Japan
    • Year and Date
      2009-08-26
    • Related Report
      2009 Annual Research Report
  • [Presentation] Effect of magnetic field on antiferromagnetism in non-centrosymmetric heavy-fermion superconductor CePt3Si2009

    • Author(s)
      金子耕士 et al.
    • Organizer
      Quantum Criticality & Novel Phases 2009
    • Place of Presentation
      Dresden, Germany
    • Year and Date
      2009-08-03
    • Related Report
      2009 Annual Research Report
  • [Presentation] Magnetic transitions in YbCo_2Si_22009

    • Author(s)
      金子耕士 et al.
    • Organizer
      International Conference on Magnetism ICM 2009
    • Place of Presentation
      Karlsruhe, Germany
    • Year and Date
      2009-07-27
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2018-03-28  

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