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TOKUNAGA Masaharu  徳永 正晴

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… Alternative Names

徳永 正晴  トクナガ マサハル

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Researcher Number 60001682
External Links
Affiliation (based on the past Project Information) *help 2009: 北海道大学, 名誉教授
2007: 北海道大学, 名誉教授
2006: 名誉教授
2005: 北海道大学, 名誉教授
2000 – 2002: 北海道大学, 理学研究科, 教授 … More
1996: 北海道大学, 大学院・理学研究科, 教授
1994: 北海道大学, 理学部, 教授
1990 – 1992: 北海道大学, 理学部, 教授
1987 – 1988: 北海道大学, 理学部, 教授
1986: 北海道大学, 応用電気研究所, 助教授 Less
Review Section/Research Field
Principal Investigator
物性一般(含基礎論) / 物性一般(含極低温・固体物性に対する理論) / 固体物性
Except Principal Investigator
固体物性 / 固体物性Ⅰ(光物性・半導体・誘電体) / Condensed matter physics I
Keywords
Principal Investigator
強誘電体 / 構造相転移 / 中性子散乱 / 水素結合 / ice rule / Soft Phonon / Ferroelectric Phase Transition / 金属強弱磁性 / 構造相転移理論 / 変位型強誘電体 … More / 強誘電性相転移 / ソフトフォノン / 量子常誘電性 / High Pressure / Order-disorder Transition / Ferroelectric / Structural Phase Transition / Raman Scattering / Neutron Scattering, / Isotope Effect / Tunneling / Hydrogen-bond / 誘電体 / 相転移 / 高圧 / 秩序無秩序相転移 / ラマン散乱 / 同位元素効果 / トンネリング / 回転子 / 散漫散乱 / KDP / 氷 / 臨界散乱 / グラス / slaterモデル … More
Except Principal Investigator
PbHPO_4 / CsH_2PO_4 / KH_2PO_4 / 強誘電体 / 水素結合 / ソフトモード / high pressure / hydrogen bond / Ferroelectrics / 同位元素効果 / 量子常誘電性 / 反強誘電相 / 圧力誘起相転移 / 擬一次元性 / 高圧 / 高圧下の構造解析 / DKDP / KDP / トンネル運動 / 同位体効果 / プロトン・ダイナミクス / ブリルアン散乱 / ブルリアン散乱 / 広帯域分光法 / 完全ソフト化 / フォノン / 時間-振動数領域広帯域分光法 / 量子強誘電体 / 8)ERECクライオスタット / 同位元素置換相転移 / ミリケルビン領域 / 時間-振動数結合広帯域分光法 / 極低温光散乱分光 / 量子ゆらぎ / 量子常誘電体 / 不規則系 / ダイナミクス / 量子効果 / 新ソフトモード / 相転移 Less
  • Research Projects

    (9 results)
  • Research Products

    (7 results)
  • Co-Researchers

    (20 People)
  •  Study of the coherent quantum fluctuations competed with formation of the long-range ferroelectric order

    • Principal Investigator
      TOSHIROU Yagi
    • Project Period (FY)
      2005 – 2009
    • Research Category
      Grant-in-Aid for Scientific Research (S)
    • Research Field
      Condensed matter physics I
    • Research Institution
      Hokkaido University
  •  新ソフトモード概念の構築

    • Principal Investigator
      TOSHIROU Yagi
    • Project Period (FY)
      2001
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      固体物性Ⅰ(光物性・半導体・誘電体)
    • Research Institution
      Hokkaido University
  •  Phase Transition in Hydrogen-Bonded Crystal at Low Temperature under High Pressure

    • Principal Investigator
      DEGUCHI Kiyoshi
    • Project Period (FY)
      2000 – 2002
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      固体物性Ⅰ(光物性・半導体・誘電体)
    • Research Institution
      Shizuoka Institute of Science and Technology
  •  氷における水素配置揺らぎの統計力学的研究Principal Investigator

    • Principal Investigator
      徳永 正晴
    • Project Period (FY)
      1996
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      物性一般(含基礎論)
    • Research Institution
      Hokkaido University
  •  氷Ih-XI相転移をガラス転移として扱う統計力学的研究Principal Investigator

    • Principal Investigator
      徳永 正晴
    • Project Period (FY)
      1994
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      物性一般(含基礎論)
    • Research Institution
      Hokkaido University
  •  Establishment of the New Viewpoint on the Dynamical Mechanism of Structural Phase Transitions in Hydrogen-bonded CrystalsPrincipal Investigator

    • Principal Investigator
      TOKUNAGA Masaharu
    • Project Period (FY)
      1990 – 1992
    • Research Category
      Grant-in-Aid for Co-operative Research (A)
    • Research Field
      固体物性
    • Research Institution
      (Faculty of Science) Hokkaido University
  •  KDPとDKDPの高圧下における構造解析とラマン分光

    • Principal Investigator
      ENDO Shoichi
    • Project Period (FY)
      1988
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      固体物性
    • Research Institution
      Osaka University
  •  A Unified Theory on the Ferroelectric Phase Transition in Analogy with the Moriya Theory on Itinerant Electron Weak FerromagnetsPrincipal Investigator

    • Principal Investigator
      TOKUNAGA Masaharu
    • Project Period (FY)
      1987 – 1988
    • Research Category
      Grant-in-Aid for General Scientific Research (C)
    • Research Field
      物性一般(含極低温・固体物性に対する理論)
    • Research Institution
      Hokkaido University
  •  水素結合型誘電体のダイナミックスに関する新視点を確立する総合的研究

    • Principal Investigator
      松原 武生
    • Project Period (FY)
      1986
    • Research Category
      Grant-in-Aid for Co-operative Research (B)
    • Research Field
      固体物性
    • Research Institution
      Okayama University of Science

All 2010 2009 2008

All Journal Article Presentation

  • [Journal Article] Isotope-Induced Ferroelectric Phase Transition in Strontium Titanate Only by a Decrease in Zero-Point Vibration Frequency2010

    • Author(s)
      M. Tokunaga, Y. Aikawa
    • Journal Title

      J. Phys. Soc. Jpn. Vol.79

    • NAID

      40016969886

    • Data Source
      KAKENHI-PROJECT-17104004
  • [Journal Article] Isotope-Induced Ferroelectric Phase Transition in Strontium Titanate Only by a Decrease in Zero-Point Vibration Frequency2010

    • Author(s)
      M.Tokunaga, Y.Aikawa
    • Journal Title

      J.Phys.Soc.Jpn. 79

    • NAID

      40016969886

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17104004
  • [Journal Article] Theoretical Investigation of the Isotope-induced Ferroelectric Phase Transition in Quantum Paraelectric Strontium Titanate2009

    • Author(s)
      M. Tokunaga, Y. Aikawa
    • Journal Title

      Ferroelectrics 378

      Pages: 8-11

    • Data Source
      KAKENHI-PROJECT-17104004
  • [Journal Article] Theoretical Investigation of the Isotope-Induced Ferroelectric Phase Transition in Quantum Paraelectric Strontium Titanate2009

    • Author(s)
      M.Tokunaga, Y.Aikawa
    • Journal Title

      Ferroelectrics 379

      Pages: 119-127

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-17104004
  • [Presentation] 変位型強誘電体での新たなRhodes-Wohlfarth比2009

    • Author(s)
      徳永正晴
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Data Source
      KAKENHI-PROJECT-17104004
  • [Presentation] Theoretical Investigation of the Isotope-induced Ferroelectric Phase Transition in Quantum Paraelectric Strontium Titanate2008

    • Author(s)
      M. Tokunaga, Y. Aikawa
    • Organizer
      9th Russia/CIS/Baltic/Japan Symposium on Ferroelectricity (RCBJSF-9)
    • Place of Presentation
      Vilnius, Lithuania
    • Data Source
      KAKENHI-PROJECT-17104004
  • [Presentation] Theoretical Investigation of the Isotope-induced Ferroelectric Phase Transition in Quantum Paraelectric Strontium Titanate2008

    • Author(s)
      M. Tokunaga
    • Organizer
      The 9-th Russia / CIS / Baltic / Japan Symposium on Ferroelectricity
    • Place of Presentation
      Vilnius University (Lithuania)
    • Year and Date
      2008-06-16
    • Data Source
      KAKENHI-PROJECT-17104004
  • 1.  TOSHIROU Yagi (30002132)
    # of Collaborated Projects: 4 results
    # of Collaborated Products: 0 results
  • 2.  ONODERA Ajira (40142682)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 0 results
  • 3.  NODA Yukio (80127274)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 0 results
  • 4.  松原 武生 (60025202)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 0 results
  • 5.  TOMINAGA Yasunori (00013540)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 0 results
  • 6.  ENDO Shoichi (10001843)
    # of Collaborated Projects: 2 results
    # of Collaborated Products: 0 results
  • 7.  根本 幸児 (60202248)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 8.  中山 恒義 (80002236)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 9.  高重 正明 (70114527)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 10.  TAKESADA Masaki (30311434)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 11.  ITOH Mitsuru (30151541)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 12.  寺内 暉 (00079667)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 13.  達崎 達 (50001673)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 14.  中島 信一 (20029226)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 15.  NAKAMURA Eiji (00000787)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 16.  IKEDA Susumu (80132679)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 17.  重成 武 (90017335)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 18.  辛 埴 (00162785)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 19.  石橋 善弘 (00023052)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 20.  DEGUCHI Kiyoshi (10033911)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results

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