Study on the long-range mangetic order formed by rare-earth spin icosahedra

• Project/Area Number: 24560808
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Physical properties of metals
• Research Institution: Tokyo University of Science
• Principal Investigator: TAMURA Ryuji 東京理科大学, 基礎工学部, 准教授 (50307708)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 準結晶 / 近似結晶 / 正20面体 / 磁性 / 正20面体クラスター

Outline of Final Research Achievements

The long-range mangnetic order over spin icosahedra in solids has been one of the unsolved issues in the modern physics. In this work, we have determined the magnetic structure of a Au-based approximant, which will provide an idea on the interpretation of the spin-glass behaviors in quasicrystals and also on the synthesis of new magnetic systems based on spin icosahedra.

Research Products

• [Journal Article] Superstructures formed by orientationally ordered tetrahedra in the bcc lattice: new diffusionless order-disorder transition in solids (2015)
  • Author(s): R. Tamura
  • Journal Title: JOURNAL OF PHYSICS-CONDENSEMATTER Volume: 27 Issue: 8 Pages: 085401-085401
  • DOI: 10.1088/0953-8984/27/8/085401
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Sign of canted ferromagnetism in the quasicrystal approximants Au-SM-R (SM = Si, Ge and Sn / R = Tb, Dy and Ho) (2014)
  • Author(s): T Hiroto, K Tokiwa, R Tamura
  • Journal Title: JOURNAL OF PHYSICS-CONDENSEMATTER Volume: 26 Issue: 21 Pages: 216004-216004
  • DOI: 10.1088/0953-8984/26/21/216004
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Ferromagnetism and re-entrant spin-glass transition in quasicrystal approximants Au-SM-Gd (SM = Si, Ge) (2013)
  • Author(s): T Hiroto, G H Gebresenbut, C Pay Gomez, Y Muro, M Isobe, Y Ueda, K Tokiwa and R Tamura
  • Journal Title: Journal of Physics : Condensed Matter Volume: 25 Issue: 42 Pages: 426004-426004
  • DOI: 10.1088/0953-8984/25/42/426004
  • Peer Reviewed
• [Journal Article] 正20面体クラスター固体における構造および磁気相転移 (2013)
  • Author(s): 田村隆治、室裕司
  • Journal Title: 固体物理 Volume: ４８ Pages: 63-72
  • Peer Reviewed
• [Journal Article] Antiferromagnetic order and the structural order? disorder transition in the Cd6Ho quasicrystal approximant (2013)
  • Author(s): A Kreyssig, G Beutier, T Hiroto, M G Kim, G S Tucker, M de Boissieu, Ryuji Tamura & Alan I. Goldman
  • Journal Title: PHILOSOPHICAL MAGAZINE LETTERS Volume: 93 Issue: 9 Pages: 512-520
  • DOI: 10.1080/09500839.2013.815375
  • Peer Reviewed
• [Presentation] 歪20面体スピン・クラスターにおける異方的磁気模型 (2015)
  • Author(s): 杉本貴則，遠山貴己，廣戸孝信，田村隆治
  • Organizer: 日本物理学会
  • Place of Presentation: 早稲田大学 東京都新宿区
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Al11TM(TM=Ir,Rh)4の超格子構造のTEM観察 (2015)
  • Author(s): 西本一恵，山口奈津美，田村隆治，寺内正己，蔡安邦
  • Organizer: 日本物理学会
  • Place of Presentation: 早稲田大学 東京都新宿区
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] 中間価数系近似結晶の作製と物性 (2015)
  • Author(s): 深海令子，廣戸孝信，室裕司，樋口透，田村隆治
  • Organizer: 日本物理学会
  • Place of Presentation: 早稲田大学 東京都新宿区
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Au-In-R準結晶の作製 (2015)
  • Author(s): 古田島尭宏，廣戸孝信，西本一恵，田村隆治
  • Organizer: 日本物理学会
  • Place of Presentation: 早稲田大学 東京都新宿区
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] 液体急冷法によるAu-Al-Tm系Tsai型準結晶の作製 (2015)
  • Author(s): 木下雄太，廣戸孝信，田村隆治，常盤和靖
  • Organizer: 日本物理学会
  • Place of Presentation: 早稲田大学 東京都新宿区
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Au-Al-Gd系 1/1近似結晶の作製と磁性 (2015)
  • Author(s): 石川明日香，廣戸孝信，田村隆治，常盤和靖
  • Organizer: 日本物理学会
  • Place of Presentation: 早稲田大学 東京都新宿区
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] 傾角強磁性体Au-Si-R (R=希土類）近似結晶の磁気異方性 (2015)
  • Author(s): 廣戸孝信，常盤和靖，田村隆治
  • Organizer: 日本物理学会
  • Place of Presentation: 早稲田大学 東京都新宿区
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Au-Si-Tb 1/1近似結晶の磁気構造 (2014)
  • Author(s): 廣戸孝信，佐藤卓，Huibo Cao，田村隆治
  • Organizer: 日本物理学会
  • Place of Presentation: 中部大学 愛知県春日井市
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] Tsai型2/1近似結晶の作製と磁気特性 (2014)
  • Author(s): 木下雄太，廣戸孝信，田村隆治
  • Organizer: 日本物理学会
  • Place of Presentation: 中部大学 愛知県春日井市
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] Au-In-RE系近似結晶の作製 (2014)
  • Author(s): 古田島尭宏，廣戸孝信，田村隆治
  • Organizer: 日本物理学会
  • Place of Presentation: 中部大学 愛知県春日井市
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] Pd基Tsai型1/1近似結晶の作製と磁気物性 (2014)
  • Author(s): 深海令子，廣戸孝信，田村隆治
  • Organizer: 日本物理学会
  • Place of Presentation: 中部大学 愛知県春日井市
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] Al-TM(TM=Ir,Rh)1/0近似結晶の作製と超格子構造 (2014)
  • Author(s): 山口菜津美，西本一恵，田村隆治
  • Organizer: 日本物理学会
  • Place of Presentation: 中部大学 愛知県春日井市
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] Al-TM(TM=Ir,Rh)1/0近似結晶の超格子構造のTEM観察 (2014)
  • Author(s): 西本一恵，山口菜津美，田村隆治，寺内正己，蔡安邦
  • Organizer: 日本物理学会
  • Place of Presentation: 中部大学 愛知県春日井市
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] Tsai型正20面体近似結晶の多様な磁性 (2013)
  • Author(s): 廣戸孝信,室裕司,礒部正彦,上田寛,田村隆治
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学
• [Presentation] Tsai型正20面体希土類クラスター固体の磁性 (2012)
  • Author(s): 廣戸孝信,室裕司,矢口宏,礒部正彦,上田寛,田村隆治
  • Organizer: 準結晶研究会
  • Place of Presentation: 近畿大学
• [Presentation] Effect of atom substitution on the magnetic transition of the Cd6Tb 1/1 approximant (2012)
  • Author(s): T. Hiroto, Y. Muro, M. Isobe, Y. Ueda, R. Tamura
  • Organizer: The 30 Years of QuasicrystalInternational Conference at Taipei Tech
  • Place of Presentation: Taipei, Taiwan
• [Presentation] Magnetic properties of Cd6R (R=rare-earth) Crystalline Appro ximants (2012)
  • Author(s): T. Hiroto, Y. Muro, M. Isobe, Y. Ueda, R. Tamura
  • Organizer: Aperiodic 2012
  • Place of Presentation: Cairns, Australia
• [Presentation] Magnetic properties of Cd based binary alloys made of icosah edral rare earth structure (2012)
  • Author(s): T. Hiroto, Y. Muro, H. Yaguchi, M. Isobe, Y. Ueda, R.Tamura
  • Organizer: Materials Research Society (MRS) fall meeting and exhibit
  • Place of Presentation: Boston, USA
• [Presentation] Structural and Magnetic Ordering in Cd-based Crystalline Approximants (2012)
  • Author(s): R. Tamura
  • Organizer: 27th European Crystallographic Meeting
  • Place of Presentation: Bergen Norway
  • Invited
• [Presentation] Structural and Magnetic Ordering in Cd-based Crystalline Approximants (2012)
  • Author(s): R. Tamura
  • Organizer: Aperiodic 2012
  • Place of Presentation: Cairns
  • Invited
• [Presentation] Magnetic Transitions in Cd-based Crystalline Approximants (2012)
  • Author(s): R. Tamura
  • Organizer: 2012 MRS FALL MEETING
  • Place of Presentation: Boston, Massachusetts
  • Invited
• [Presentation] Au基Tsai型近似結晶の磁性
  • Author(s): 廣戸孝信，室裕司，矢口宏，磯部正彦，上田寛，田村隆治
  • Organizer: 日本物理学会
  • Place of Presentation: 徳島大学
• [Presentation] Au -IV 族-希土類系近似結晶の強磁性
  • Author(s): 廣戸孝信、田村隆治
  • Organizer: 第１８回準結晶研究会
  • Place of Presentation: 東京理科大学葛飾キャンパス
• [Presentation] Re-entrant spin glass in a Tsai-type approximant
  • Author(s): R. Tamura
  • Organizer: 12th International Conference on Quasicrystals
  • Place of Presentation: Krakow, Poland
• [Presentation] Ferro- and ferri-magnetic ordering in ternary Tsai-type magnetic icosahedral quasicrystalline approximants
  • Author(s): T. Hiroto, R. Tamura
  • Organizer: 12th International Conference on Quasicrystals
  • Place of Presentation: Krakow, Poland