Investigation of thermal conductivity mechanism controlled by magnetic field and its application to novel thermoelectric devices

• Project/Area Number: 15K14170
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Structural/Functional materials
• Research Institution: Japan Synchrotron Radiation Research Institute
• Principal Investigator: Satoshi Tsutsui 公益財団法人高輝度光科学研究センター, 利用研究促進部門, 主幹研究員 (70360823)
• Co-Investigator(Kenkyū-buntansha): 鬼丸 孝博 広島大学, 先端物質科学研究科, 准教授 (50444708)
• Co-Investigator(Renkei-kenkyūsha): Yoshio Kobayashi 電気通信大学, 情報理工学系研究科, 教授 (30221245)
• Research Collaborator: Goh Swee K. the Chinese University of Hong Kong
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: カゴ状物質 / ゲスト原子 / フォノン / 熱伝導度 / 磁性 / ラットリング / メスバウアー効果 / 非調和フォノン / 部分フォノン状態密度測定 / 核共鳴非弾性散乱 / クラスレート化合物 / 熱伝導

Outline of Final Research Achievements

This study has been focused on cage-structured compounds expected to be a candidate of thermoelectric materials. Particularly, we have investigated cage-structured compounds having a magnetic guest atom, which is important for thermal insulation, in order to reveal relationships between thermal insulation and magnetic properties in cage-structured compounds. One of the important obtained in the present work is the fact that guest atomic motions in type-I clathrates, which correlate with thermal insulation, are more sensitive to number of their carriers than their ferromagnetic ordering.

Research Products

• [Int'l Joint Research] The Chinese University of Hong Kon(China)
• [Journal Article] Second-order Structural Transition in (Ca0.5Sr0.5)3Rh4Sn13 (2017)
  • Author(s): Y. W. Cheung, Y. J. Hu, S. K. Goh, K. Kaneko, S. Tsutsui, P. W. Logg, F. M. Grousch, H. Kanagawa, Y. Tanioku, M. Imai, T. Matsumoto, K. Yoshimura
  • Journal Title: J. Phys. Conf. Ser. Volume: 807 Pages: 0320021-4
  • DOI: 10.1088/1742-6596/807/3/032002
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Structural, Magnetic, and Superconducting Properties of Caged Compounds ROs2Zn20 (R = La, Ce, Pr, and Nd) (2017)
  • Author(s): K. Wakiya, T. Onimaru, K. T. Matsumoto, Y. Yamane, N. Nagasawa, K. Umeo, S. Kittaka, T. Sakakibara, Y. Matsushita, and T. Takabatake
  • Journal Title: J. Phys. Soc. Jpn. Volume: 86 Issue: 3 Pages: 034707-034707
  • DOI: 10.7566/jpsj.86.034707
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Synchrotron Radiation Mossbauer Spectroscopy using 149Sm Nuclei (2016)
  • Author(s): Satoshi Tsutsui, Ryo Masuda, Yasuhiro Kobayashi, Yoshitaka Yoda, Kota Mizuuchi, Yusei Shimizu, Hiroyuki Hidaka, Tatsuya Yanagisawa, Hiroshi Amitsuka, Fumitoshi Iga, and Makoto Seto
  • Journal Title: Journal of the Physical Society of Japan Volume: 85 Issue: 8 Pages: 083704-083704
  • DOI: 10.7566/jpsj.85.083704
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Mixed valence state (SmxLa1-x)Tr2Al20 (2016)
  • Author(s): Akira Yamada, Ryuji Higashinaka, Kengo Fushiya, Takuya Asano, Tatsuma D. Matsuda, Masaichiro Mizumaki, Satoshi Tsutsui, Kiyofumi Nitta, Toshiaki Ina, Tomoya Uruga and Yuji Aoki
  • Journal Title: J. Phys.: Conf. Ser. Volume: 683 Pages: 0120201-6
  • DOI: 10.1088/1742-6596/683/1/012020
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Effect of Ga Substitution on the Γ3 Doublet Ground State in PrIr2Zn20 (2016)
  • Author(s): T. Onimaru, K. Uenishi, Y. Yamane, K. Wakiya, K. T. Matsumoto, K. Umeo and T. Takabatake
  • Journal Title: J. Phys.: Conf. Series Volume: 683 Pages: 012011-012011
  • DOI: 10.1088/1742-6596/683/1/012011
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Long-time variation in magnetic structure of CeIr3Si2: Observation of a nucleation-and-growth process of magnetic domains (2016)
  • Author(s): K. Motoya, M. Hagihara, T. Takabatake, M. Matsuda
  • Journal Title: J. Phys. Soc. Jpn. Volume: 85 Issue: 4 Pages: 043601-043601
  • DOI: 10.7566/jpsj.85.043601
  • NAID: 210000133881
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Low-energy optical phonon modes in the caged compound LaRu2Zn20 (2015)
  • Author(s): K. Wakiya, T. Onimaru, S. Tsutsui, T. Hasegawa, K. T. Matsumoto, N. Nagasawa, A. Q. R. Baron, N. Ogita, M. Udagawa, T. Takabatake
  • Journal Title: Phys. Rev. B Volume: 93 Issue: 6
  • DOI: 10.1103/physrevb.93.064105
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Sm系重い電子化合物の放射光メスバウアー分光 (2017)
  • Author(s): 筒井智嗣、中村 仁、小林義男、久保謙哉、依田芳卓、山田 瑛、東中隆二、松田達磨、青木勇二、水牧仁一朗、佐藤英行
  • Organizer: 日本物理学会第72回年会
  • Place of Presentation: 大阪大学豊中キャンパス（大阪府豊中市）
  • Year and Date: 2017-03-17
• [Presentation] PrIr2Zn20の非フェルミ液体的挙動に対するZnサイト置換効果 (2017)
  • Author(s): 山田怜志, 鬼丸孝博, 上西和登, 山根悠, 脇舎和平, 松本圭介, 梅尾和則, 高畠敏郎
  • Organizer: 日本物理学会第72回年会
  • Place of Presentation: 大阪大学 豊中キャンパス（大阪府豊中市）
  • Year and Date: 2017-03-17
• [Presentation] Pr希薄系Y1-xPrxIr2Zn20 (x≦0.05)の非フェルミ液体的挙動に対する磁場効果 (2017)
  • Author(s): 山根悠, 上西和登, 脇舎和平, 松本圭介, 鬼丸孝博, 梅尾和則, 高畠敏郎
  • Organizer: 日本物理学会第72回年会
  • Place of Presentation: 大阪大学 豊中キャンパス（大阪府豊中市）
  • Year and Date: 2017-03-17
• [Presentation] 六方晶RRh3(R = Pr, Nd)の強磁性と二形LaRh3の超伝導 (2017)
  • Author(s): 朴景培, 山根悠, 鬼丸孝博, 梅尾和則, 高畠敏郎
  • Organizer: 日本物理学会第72回年会
  • Place of Presentation: 大阪大学 豊中キャンパス（大阪府豊中市）
  • Year and Date: 2017-03-17
• [Presentation] Sm金属間化合物の放射光メスバウアー分光 (2017)
  • Author(s): 筒井智嗣、依田芳卓、中村 仁、小林義男、久保謙哉
  • Organizer: 第18回メスバウアー分光研究会シンポジウム
  • Place of Presentation: 東京理科大学森戸会館（東京都新宿区）
  • Year and Date: 2017-03-15
• [Presentation] Sm金属間化合物における電荷・磁気自由度のプローブとしてのSm-149放射光メスバウアー分光 (2017)
  • Author(s): 筒井智嗣
  • Organizer: 第5回先進的放射光メスバウアー分光研究会
  • Place of Presentation: 名古屋工業大学（愛知県名古屋市）
  • Invited
• [Presentation] Application of Synchrotron Radiation Mossbauer Spectroscopy to Samarium Compounds (2016)
  • Author(s): S. Tsutsui, Y. Kobayashi, Y. Yoda, R. Masuda, K. Mizuuchi, Y. Shimizu, H. Hidaka, T. Yanagisawa, H. Amitsuka, F. Iga and M. Seto
  • Organizer: Mediterranean Conference on the Applications of the Mossbauer Effect (MECAME2016)
  • Place of Presentation: Cavtat in Croatia
  • Year and Date: 2016-05-31
  • Int'l Joint Research / Invited
• [Presentation] Quadrupole-Driven Non-Fermi Liquid Behaviors in Pr 1-2-20 System (2016)
  • Author(s): T. Onimaru
  • Organizer: J-Physics: Mini International Workshop: “Physics of Strongly Correlated Electron Systems under Extreme Conditions”
  • Place of Presentation: 神戸大学六甲台キャンパス（兵庫県神戸市）
  • Year and Date: 2016-04-13
  • Int'l Joint Research
• [Presentation] エネルギー分散型放射光メスバウアー分光のSm化合物への応用 (2016)
  • Author(s): 筒井智嗣
  • Organizer: 第４回先進的放射光メスバウアー分光のSm化合物への応用
  • Place of Presentation: 名古屋工業大学
  • Year and Date: 2016-03-03
  • Invited
• [Presentation] Quadrupole-driven exotic phenomena in non-Kramers doublet systems (2016)
  • Author(s): T. Onimaru
  • Organizer: 13th German-Japanese symposium: Effects of Parity Mixing in Correlated Electron Systems
  • Place of Presentation: 北海道札幌市
  • Int'l Joint Research / Invited
• [Presentation] Os-2p Magnetic Circular Dichroism of a Heavy Fermion Compound SmOs4Sb12 (2015)
  • Author(s): Satoshi Tsutsui
  • Organizer: Application of XAFS to the Study of magnetic materials
  • Place of Presentation: Max-Planck Institute, Stuttgart
  • Year and Date: 2015-08-30
  • Int'l Joint Research