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Phase transition study of minerals by terahertz micro-Raman spectroscopy

Research Project

Project/Area Number 16H04076
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Petrology/Mineralogy/Economic geology
Research InstitutionOkayama University

Principal Investigator

Kanzaki Masami  岡山大学, 惑星物質研究所, 教授 (90234153)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2016: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
Keywords低周波数ラマン分光法 / テラヘルツ分光 / 相転移 / ソフトモード / 鉱物 / メラノフロジャイト / モガナイト / トリディマイト / ラマン分光法 / テラヘルツ / 地殻流体 / 局所構造 / 地球・惑星内部構造 / 岩石・鉱物・鉱床学 / 物性実験
Outline of Final Research Achievements

Using low-frequency micro-Raman spectrometer developed by the author, phase transition behaviors of several minerals were studied. For the temperature-induced phase transition of AlPO4-moganite, we can observe soft mode for the transition, and its behavior was clarified. Also, the phase transitions behaviors between tridymite modifications were studied. Our result revealed that the transition behavior of OC/HP transition, which is higher than previous studies by X-ray diffraction. It was concluded that our observed transition is to true hexagonal HP phase rather than a space- and time-averaged HP phase which X-ray diffraction detected. We also compiled Raman spectra of three tridymite modifications stable at room temperature for the first time. Our spectra will help other people to identify the modifications in natural rocks including the meteorites, and Moon and Mars rocks by Raman spectroscopy.

Academic Significance and Societal Importance of the Research Achievements

メラノフロジャイトはCO2やメタンガスをその構造に取り込む。本研究により、メラノフロジャイト中のCO2は、摂氏400度までは安定であることがわかった。これは温室効果ガスであるCO2を構造に取り込んでも極めて安定であるが分かり、環境問題への応用の可能性があることを示した。
また、本研究では低周波数ラマン分光法を、既存の装置を改造して整備した。そこで使われたり、開発したテクニックは分析分野でも役立つと思われる。研究の広報も兼ねて、wikiページを使って、本研究の成果を一般の方が見られる形で公開している。英語版も作成しており、英語版についてはこれまで約5,800件の閲覧があった。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (19 results)

All 2019 2018 2017 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (6 results) (of which Int'l Joint Research: 3 results) Remarks (8 results)

  • [Journal Article] High-temperature Raman spectroscopic study of CO2-containing melanophlogite2019

    • Author(s)
      KANZAKI Masami
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 114

    • NAID

      130007677824

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temperature–induced phase transition of AlPO<sub>4</sub>–moganite studied by in–situ Raman spectroscopy2018

    • Author(s)
      Kanzaki, M.
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 113 Issue: 3 Pages: 126-134

    • DOI

      10.2465/jmps.171219

    • NAID

      130007403355

    • ISSN
      1345-6296, 1349-3825
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Pressure–induced phase transitions of Zn<sub>2</sub>SiO<sub>4</sub> III and IV studied using in–situ Raman spectroscopy2018

    • Author(s)
      Kanzaki, M.
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 113 Issue: 5 Pages: 263-267

    • DOI

      10.2465/jmps.180409

    • NAID

      130007506141

    • ISSN
      1345-6296, 1349-3825
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temperature-induced phase transition of AlPO4-moganite studied by in-situ Raman spectroscopy2018

    • Author(s)
      KANZAKI Masami
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 113

    • NAID

      130007403355

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Protoenstatite in MgSiO<sub>3</sub> samples prepared by conventional solid state reaction2017

    • Author(s)
      Kanzaki, M., Xue, X.
    • Journal Title

      Journal of Mineralogical and Petrological Sciences

      Volume: 112 Issue: 6 Pages: 359-364

    • DOI

      10.2465/jmps.170616

    • NAID

      130006287866

    • ISSN
      1345-6296, 1349-3825
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Low-frequency micro-Raman spectroscopy and its application to mineral sciences2019

    • Author(s)
      KANZAKI Masami
    • Organizer
      Misasa2019 and Core-mantle coevolution International Joint Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] エンスタタイトにおける水素の存在状態2018

    • Author(s)
      薛献宇・神崎正美・J. Jiang
    • Organizer
      日本地球惑星科学連合2018年大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 常温に急冷したプロトエンスタタイトの構造について2017

    • Author(s)
      神崎正美
    • Organizer
      地球惑星連合学会年会(AGU Joint Meeting)
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2017-05-20
    • Related Report
      2016 Annual Research Report
  • [Presentation] AlPO4モガナイト相における相転移:高温その場ラマン分光法による研究2017

    • Author(s)
      神崎正美
    • Organizer
      地球惑星連合学会年会(AGU Joint Meeting)
    • Place of Presentation
      幕張メッセ
    • Year and Date
      2017-05-20
    • Related Report
      2016 Annual Research Report
  • [Presentation] AlPO4モガナイト相における相転移:高温その場ラマン分光法による研究2017

    • Author(s)
      神崎正美
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 常温に急冷したプロトエンスタイトの構造について2017

    • Author(s)
      神崎正美
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 顕微ラマン分光法についてのwikiページ(英語版)

    • URL

      http://www.misasa.okayama-u.ac.jp/~masami/pukiwiki/index.php?Micro-Raman%20spectroscopy

    • Related Report
      2018 Annual Research Report
  • [Remarks] 低周波数ラマン分光について本研究により得た情報やハードウェアについて書き込んだwikiページ

    • URL

      http://www.misasa.okayama-u.ac.jp/~masami/pukiwiki/index.php?%C4%E3%BC%FE%C7%C8%BF%F4%A5%E9%A5%DE%A5%F3%CA%AC%B8%F7%CB%A1

    • Related Report
      2018 Annual Research Report
  • [Remarks] 顕微ラマン分光について本研究により得た情報等を書き込んだwikiページ

    • URL

      http://www.misasa.okayama-u.ac.jp/~masami/pukiwiki/index.php?%B8%B2%C8%F9%A5%E9%A5%DE%A5%F3%CA%AC%B8%F7%CB%A1

    • Related Report
      2018 Annual Research Report
  • [Remarks] 低周波数ラマン分光法wikiページ

    • URL

      http://www.misasa.okayama-u.ac.jp/~masami/pukiwiki/index.php?%C4%E3%BC%FE%C7%C8%BF%F4%A5%E9%A5%DE%A5%F3%CA%AC%B8%F7%CB%A1

    • Related Report
      2017 Annual Research Report
  • [Remarks] 顕微ラマン分光法wikiページ

    • URL

      http://www.misasa.okayama-u.ac.jp/~masami/pukiwiki/index.php?%B8%B2%C8%F9%A5%E9%A5%DE%A5%F3%CA%AC%B8%F7%CB%A1

    • Related Report
      2017 Annual Research Report
  • [Remarks] 低周波数ラマン分光法

    • URL

      http://www.misasa.okayama-u.ac.jp/~masami/pukiwiki/index.php?%C4%E3%BC%FE%C7%C8%BF%F4%A5%E9%A5%DE%A5%F3%CA%AC%B8%F7%CB%A1

    • Related Report
      2016 Annual Research Report
  • [Remarks] 顕微ラマン分光法

    • URL

      http://www.misasa.okayama-u.ac.jp/~masami/pukiwiki/index.php?%B8%B2%C8%F9%A5%E9%A5%DE%A5%F3%CA%AC%B8%F7%CB%A1

    • Related Report
      2016 Annual Research Report
  • [Remarks] Micro-Raman spectroscopy

    • URL

      http://www.misasa.okayama-u.ac.jp/~masami/pukiwiki/index.php?Micro-Raman%20spectroscopy

    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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