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2009 Fiscal Year Self-evaluation Report

Development of New Functional Materials in Clathrate System

Planned Research

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Project AreaNew Materials Science Using Regulated Nano Spaces -Strategy in Ubiquitous Elements
Project/Area Number 19051011
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionHiroshima University

Principal Investigator

YAMANAKA Shoji  Hiroshima University, 大学院・工学研究科, 教授 (90081314)

Project Period (FY) 2007 – 2011
Keywordsクラスレート / 超伝導 / 熱電変換 / 14族元素 / 超高圧合成
Research Abstract

(1) ユビキタス元素(C, B, N, Al, Si, P, Ge,Snなど)は指向性の強いsp3 混成軌道により三次元ネットワークをつくり易い。この特性を用いて,クラスレートと呼ばれるカゴ状ナノネットワークを構築し,新規機能材料の創製を目指す。
(2) カゴの中に種々の原子を閉じ込めることにより,あるいはネットワーク原子の同形置換により,半導体から,金属,超伝導体におよぶ多彩な物性示す新規クラスレートを設計する。
(3) 内包される原子とカゴの大きさのマッチングを調整することにより,高効率の熱電変換材料を探索する。
(4) 極めて多彩な物性が期待できるユビキタス元素から構成されるクラスレート化合物について,構造設計・合成と物性探索の両面から総合的に研究を推進する。

  • Research Products

    (15 results)

All 2010 2009 2008 2007

All Journal Article (10 results) Presentation (4 results) Book (1 results)

  • [Journal Article] Silicon Clathrates and Carbon Analogs, High Pressure syntesis, Structure and Superconductivity2010

    • Author(s)
      S. Yamanaka
    • Journal Title

      Dalton Trans 39

      Pages: 1901-1915

  • [Journal Article] Interplay between thermoelectric and structural properties of type-I clathrate K8Ga8Sn38 single crystals2010

    • Author(s)
      T. Tanaka, T. Onimaru, K. Suekuni, S. Mano, H. Fukuoka, S. Yamanaka, T. Takabatake
    • Journal Title

      Phys. Rev. B 81

      Pages: 165110(1-6)

  • [Journal Article] Phase Diagram of the La-Si Binary System under High Pressure and the Structures of Superconducting LaSi5 and LaSi102009

    • Author(s)
      S. Yamanaka, S. Izumi, S. Maekawa, K. Umemoto
    • Journal Title

      J. Solid State Chem 182

      Pages: 1991-2003

  • [Journal Article] Controlled Thermal Decomposition of NaSi to Derive Silicon Clathrate2009

    • Author(s)
      H. Horie, T. Kikudome, K. Teramura, S. Yamanaka
    • Journal Title

      J. Solid State Chem 182

      Pages: 129-135

  • [Journal Article] Direct verification of Ga-Ga bond avoidance in the type-I clathrate Ba8Ga16Sn30 from its x-ray absorption fine structure2009

    • Author(s)
      M. Kozina, F. Bridges, Y. Jiang, M.A. Avila, K. Suekuni, T. Takabatake
    • Journal Title

      Phys. Rev. B 80

      Pages: 212101(1-4)

  • [Journal Article] Topochemical 3D Polymerization of C60 under High Pressure at Elevated Temperatures2008

    • Author(s)
      S. Yamanaka, N.S. Kini, A. Kubo, S. Jida, H. Kuramoto
    • Journal Title

      J. Am. Chem. Soc. 130

      Pages: 4303-4309

  • [Journal Article] Ternary Compound B4CN4 Prepared by Direct Nitridation of B4C2008

    • Author(s)
      F. Zhuge, S. Yamanaka
    • Journal Title

      J. Alloys Compd 466

      Pages: 299-303

  • [Journal Article] Simultaneous structure and carrier tuning of dimorphic clathrate Ba8Ga16Sn302008

    • Author(s)
      K. Suekuni, M.A. Avila, K. Umeo, H. Fukuoka, S. Yamanaka, T. Nakagawa, T. Takabatake
    • Journal Title

      Phys. Rev. B 77

      Pages: 235119(1-8)

  • [Journal Article] Ba8Ga16Sn30 with type-I clathrate structure: Drastic suppression of heat conduction2008

    • Author(s)
      M.A. Avila, K. Suekuni, K. Umeo, H. Fukuoka, S. Yamanaka, T. Takabatake
    • Journal Title

      Appl. Phys. Lett. 92

      Pages: 041902(1-3)

  • [Journal Article] Off-center rattling and anisotropic expansion of type-I clathrates studied by Raman scattering2008

    • Author(s)
      Y. Takasu, T. Hasegawa, N. Ogita, M. Udagawa, M.A. Avila, K. Suekuni, T. Takabatake
    • Journal Title

      Phys. Rev. Lett. 100

      Pages: 165503(1-4)

  • [Presentation] 三元系Ca-Al-Siにおける高圧相の合成と結晶構造2010

    • Author(s)
      田中佑樹, 山中昭司
    • Organizer
      日本化学会第90春季年会
    • Place of Presentation
      近畿大学, 大阪
    • Year and Date
      2010-03-26
  • [Presentation] Thermoelectric clathrates with off-center rattling ions2009

    • Author(s)
      高畠敏郎
    • Organizer
      Croatian - Japanese Workshop on Materials Science
    • Place of Presentation
      Zagreb, Croatia(Invited)
    • Year and Date
      2009-06-30
  • [Presentation] Thermoelectric properties of f-electron compounds with hybridization gaps2008

    • Author(s)
      高畠敏郎
    • Organizer
      25th Rare Earth Research Conf.
    • Place of Presentation
      Tuscaloosa, Alabama, USA(Invited)
    • Year and Date
      2008-06-23
  • [Presentation] High Pressure Synthesis of Silicon Clathrate Superconductors and Carbon Analogs2007

    • Author(s)
      S. Yamanaka
    • Organizer
      フランス化学会150周年記念大会
    • Place of Presentation
      Paris, France(Invited)
    • Year and Date
      20070716-20070718
  • [Book] 熱電変換技術ハンドブック, 第2章熱電変換材料, 希土類近藤半導体2008

    • Author(s)
      高畠敏郎, 梶川武信
    • Total Pages
      170-175
    • Publisher
      NTS出版

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Published: 2011-06-18   Modified: 2016-04-21  

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