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2012 Fiscal Year Final Research Report

Mineral assemblage in the deep interior of the giant planet investigated by the high pressure and temperature phase transition in titanate

Research Project

  • PDF
Project/Area Number 23740389
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionThe University of Tokyo

Principal Investigator

HAMANE Daisuke  東京大学, 物性研究所, 技術職員 (20579073)

Project Period (FY) 2011 – 2012
Keywordsチタネイト / ダイアモンドアンビルセル / 放射光 X 線 / 透過型電子顕微鏡
Research Abstract

Mineral assemblage in the deep interior of the giant planet such as Super Earth is the challenging subject for the experimental study because of the significant difference between experimentally producible pressure and real pressure at the interior of the giant planet. One of the plausible ways is an approach from the analogue material, and then titanate is expected to behave as analogue of silicate even at low pressure. Although the long-held expectation was the decomposition of ABO3-type compound into AO + BO2 assemblage at the ultrahigh pressure, present experimental work showed that 2/3FeO + 1/3FeTi3O7 assemblage is the densest and this model may be more stable at deeper interior of the giant planet.

  • Research Products

    (4 results)

All 2012 2011

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (3 results)

  • [Journal Article] High-pressure and high-temperature phase transitions in FeTiO3 and a new dense FeTi3O7 structure.2012

    • Author(s)
      Nishio-Hamane D., Zhang M., Yagi T., Ma Y.
    • Journal Title

      American Mineralogist

      Volume: 97 Pages: 568-572

    • DOI

      doi:10.2138/am.2012.3973

    • Peer Reviewed
  • [Presentation] チタネイトATiO3(A=Fe,Ca,Mg)の高圧高温相転移2012

    • Author(s)
      浜根大輔他
    • Organizer
      第53回高圧討論会
    • Place of Presentation
      大阪
    • Year and Date
      2012-11-08
  • [Presentation] High pressure and high temperature phase transition in FeTiO : implications for the deep interior of the giant planet2011

    • Author(s)
      Nishio-Hamane D. 他.
    • Organizer
      AGU 2011 Fall Meeting
    • Place of Presentation
      サンフランシスコ,USA
    • Year and Date
      2011-12-07
  • [Presentation] FeTiO3の高圧高温相転移とFeTi3O7相の構造2011

    • Author(s)
      浜根大輔 他
    • Organizer
      第52回高圧討論会
    • Place of Presentation
      沖縄
    • Year and Date
      2011-11-10

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Published: 2014-09-25  

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