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Correlation between cations with anomalous coordination and the glass structure

Research Project

Project/Area Number 19K22072
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Masai Hirokazu  国立研究開発法人産業技術総合研究所, 材料・化学領域, 主任研究員 (10451543)

Co-Investigator(Kenkyū-buntansha) 小野寺 陽平  京都大学, 複合原子力科学研究所, 助教 (20531031)
小原 真司  国立研究開発法人物質・材料研究機構, 先端材料解析研究拠点, 主幹研究員 (90360833)
Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywordsガラス / 構造 / モデリング / 物性 / 構造解析 / ネットワーク / 配位
Outline of Research at the Start

これまで、ガラスの構造は、対応する結晶の構造を基にして議論がなされてきた。しかし、ガラス融液を冷却して作製するガラスにおいては、熱力学的に安定な結晶の配位数とは異なる構造が存在することが予想される。本研究は、種々の酸化物ガラスを対象として、詳細な構造解析と物性評価を行うことにより、特異的な配位数を有するカチオンの存在を実証し、ガラス構造との相関を明らかにすることを目的とする。

Outline of Final Research Achievements

The difference between glass and crystal is one of the most important topics from the viewpoint of materials science. In this study, the three-dimensional structure of phosphate glasses prepared by the melt-quenching method was clarified based on various experiments, such as high energy XRD, neutron diffraction, and X-ray absorption fine structure (XAFS). It was also found that there are cations with non-integer coordination numbers with low symmetry in the obtained glasses. In addition, it is found that XAFS data at low temperatures is important to discuss the intrinsic nonperiodic structure of the glass.

Academic Significance and Societal Importance of the Research Achievements

酸化物ガラスの構造は、世界的に結晶と同じ配位数を取ると考えられていたが、ガラス中に特異的な配位数を取るということを実証したという点で重要な成果である。つまり、結晶とガラスでは、元素の取りうる配位状態は同一ではないということを示したことになる。また、X線吸収微細構造解析を用いてガラス中の構造を議論するというアプローチは、今後の種々のガラスにおける研究に影響を与えると考えられる。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (11 results)

All 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (9 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results)

  • [Journal Article] Relationship between the first sharp diffraction peak and physical properties of silicon dioxide (SiO<sub>2</sub>) glasses possessing different fictive temperatures2020

    • Author(s)
      Hirokazu MASAI, Shinji KOHARA, Yohei ONODERA, Akitoshi KOREEDA, Kazuya SAITO, Edison Haruhico SEKIYA, Naoyuki KITAMURA
    • Journal Title

      Journal of the Ceramic Society of Japan

      Volume: 128 Issue: 12 Pages: 1038-1044

    • DOI

      10.2109/jcersj2.20172

    • NAID

      130007949054

    • ISSN
      1348-6535, 1882-0743
    • Year and Date
      2020-12-01
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] "Correlation between structure and physical properties of binary ZnO-P2O5 glasses"2020

    • Author(s)
      Hirokazu Masai, Yohei Onodera, Shinji Kohara, Takahiro Ohkubo, Akitoshi Koreeda, Yasuhiro Fujii, Masanori Koshimizu, and Masato Yamawaki
    • Journal Title

      Phys. Status Solidi b

      Volume: 257 Issue: 11 Pages: 2000186-2000186

    • DOI

      10.1002/pssb.202000186

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] X線回折より得られた仮想温度の異なるSiO2ガラスの構造因子2020

    • Author(s)
      正井博和、小原真司、小野寺陽平、是枝聡肇、藤井康裕、齋藤和也
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 量子ビームを用いた酸化物ガラスの構造解析2020

    • Author(s)
      正井博和、小野寺陽平、小原真司、大窪貴洋
    • Organizer
      日本セラミックス協会第33回秋季シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] Relationship between the First Sharp Diffraction Peak and Physical Properties of SiO2 glasses Possessing Different Fictive Temperatures2020

    • Author(s)
      Hirokazu Masai, Shinji Kohara, Yohei Onodera, Akitoshi Koreeda, Kazuya Saito, Haruhiko E. Sekiya, Naoyuki Kitamura
    • Organizer
      Glass Meeting 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Relationship between structure and optical properties of oxide glasses2019

    • Author(s)
      Hirokazu Masai, Shinji Kohara, Yohei Onodera, Takahiro Ohkubo, Akitoshi Koreeda
    • Organizer
      CIOP2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ZnO-P2O5 ガラスの構造に対するR2O3 の置換効果2019

    • Author(s)
      正井博和、小野寺陽平、小原真司、是枝聡肇、藤井康裕、大窪貴洋
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Examination of Phosphate Glasses by Combination of Different Analysis Methods2019

    • Author(s)
      Hirokazu Masai, Shinji Kohara, Yohei Onodera, Akitoshi Koreeda, Takahiro Ohkubo
    • Organizer
      PACRIM13
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Correlation between structure and physical properties of binary ZnO-P2O5 glasses2019

    • Author(s)
      Hirokazu Masai, Yohei Onodera, Shinji Kohara, Takahiro Ohkubo, Akitoshi Koreeda, Yasuhiro Fujii, Masanori Koshimizu, Masato Yamawaki
    • Organizer
      NCM14
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 亜鉛リン酸塩ガラスにおける構造と物性との相関2019

    • Author(s)
      正井博和、小野寺陽平、小原真司、大窪貴洋、是枝聡肇、藤井康裕、越水正典、山脇正人
    • Organizer
      第60回ガラスおよびフォトニクス材料討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] Relationship between Structure and Physical Properties of Phosphate Glasses2019

    • Author(s)
      Hirokazu Masai, Shinji Kohara, Yohei Onodera, Akitoshi Koreeda, Takahiro Ohkubo
    • Organizer
      MRM2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2019-07-04   Modified: 2022-01-27  

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