Study on the orientational ordering of the tetrahedron inside anicosahedral cluster

• Project/Area Number: 21760522
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Physical properties of metals
• Research Institution: Tokyo University of Science
• Principal Investigator: TAMURA Ryuji Tokyo University of Science, 基礎工学部, 准教授 (50307708)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2009: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 準結晶 / 近似結晶 / 規則-不規則相転移 / 相転移 / 散漫散乱

Research Abstract

The behavior of a tetrahedron in the Zn6Sc compound was investigated by using synchrotron radiation. As a result, following insights into its behavior has been obtained. 1. The correlation length between the tetrahedral develops and reaches ～1000Å as temperature approaches T_c. 2. The crystal abruptly transforms from cubic to monoclinic lattice at T_c. 3. Diffuse scatterings observed above T_c merge into Bragg peaks below T_c and the domain size reaches ～1000Å.

Research Products

• [Journal Article] Experimental evidence for a phase transition in a Zn6Sc cubic approximant. (2010)
  • Author(s): T.Yamada, R.Tamura, Y.Muro, K.Motoya, M.Isobe, Y.Ueda.
  • Journal Title: Phys. Rev. B 82
• [Journal Article] Experimental evidence for a phase transition in a Zn6Sc cubic approximant (2010)
  • Author(s): T.Yamada, R.Tamura, Y.Muro, K.Motoya, M.Isobe, Y.Ueda
  • Journal Title: Physical Review B Volume: 82
  • Peer Reviewed
• [Presentation] Diffuse Scattering in the Zn6Sc 1/1 Cubic Approximant. (2010)
  • Author(s): T.Yamada, C.P.Gomez, R.Tamura, H.Euchner, A.Yamamoto, M. de Boissieu.
  • Organizer: 11th International Conference on Quasicrystals.
  • Place of Presentation: 北海道大学(札幌)
  • Year and Date: 2010-06-14
• [Presentation] Diffuse Scattering in the Zn6Sc 1/1 Cubic Approximant (2010)
  • Author(s): T.Yamada, C.P.Gomez, R.Tamura, H.Euchner, A.Yamamoto, M.de Boissieu
  • Organizer: 11th International Conference on Quasicrystals
  • Place of Presentation: 北海道大学(札幌)
  • Year and Date: 2010-06-14
• [Presentation] Cd系1/1近似結晶の低温相の分類 (2010)
  • Author(s): 西本一恵
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学津島キャンパス
  • Year and Date: 2010-03-21
• [Presentation] 単結晶を用いたZn6Sc近似結晶の低温相転移の研究2 (2009)
  • Author(s): 山田庸公
  • Organizer: 日本物理学会秋季大会
  • Place of Presentation: 熊本大学黒髪キャンパス
  • Year and Date: 2009-09-26
• [Presentation] Cd6M(M=Sr,Pr,Sm)の低温TEM観察 (2009)
  • Author(s): 西本一恵
  • Organizer: 日本物理学会秋季大会
  • Place of Presentation: 熊本大学黒髪キャンパス
  • Year and Date: 2009-09-26
• [Presentation] Low-temperature phase transition of a Zn6Sc 1/1 cubic approximant (2009)
  • Author(s): T.Yamada
  • Organizer: 6th International Conference on Aperiodic Crystals
  • Place of Presentation: Liverpool, England
• [Presentation] Low-temperature TEM observations of Cd6M (M=Sr,Pr,Nd and Sm) approximants (2009)
  • Author(s): K.Nishimoto
  • Organizer: 6th International Conference on Aperiodic Crystals
  • Place of Presentation: Liverpool, England
• [Presentation] Orientational ordering of a tetrahedron in Cd- and Zn-based 1/1 approximants at low temperatures (2009)
  • Author(s): R.Tamura
  • Organizer: 6th International Conference on Aperiodic Crystals
  • Place of Presentation: Liverpool, England