Phase boundary between ilmenite and perovskite structures in MnGeO3 determined by in situ X-ray diffraction measurements

Daisuke Yamazaki, Eiji Ito, Yoshinori Tange, Takashi Yoshino, Shuangmeng Zhai, Hiroshi Fukui, Anton Shatskiy, Tomoo Katsura, Ken Ichi Funakoshi

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In situ X-ray observations of the phase transition from ilmenite to perovskite structure in MnGeO3 were carried out in a Kawai-type high-pressure apparatus interfaced with synchrotron radiation. The phase boundary between the ilmenite and perovskite structures in the temperature range of 700-1,4007deg;C was determined to be P (GPa) = 16.5(±0.6) 0.0034(±0.0006)T (°C) based on Anderson's gold pressure scale. The Clapeyron slope, dP/dT, determined in this study is consistent with that for the transition boundary between the ilmenite and the perovskite structure in MgSiO3.

Original languageEnglish
Pages (from-to)269-273
Number of pages5
JournalPhysics and Chemistry of Minerals
Volume34
Issue number4
DOIs
Publication statusPublished - May 1 2007

Keywords

  • High pressure and temperature
  • Ilmenite
  • MnGeO
  • Perovskite
  • Phase boundary

ASJC Scopus subject areas

  • Materials Science(all)
  • Geochemistry and Petrology

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