Phase boundary between perovskite and post-perovskite structures in MnGeO3 determined by in situ X-ray diffraction measurements using sintered diamond anvils

Daisuke Yamazaki, Eiji Ito, Tomoo Katsura, Takashi Yoshino, Shuangmeng Zhai, Hiroshi Fukui, Anton Shatskiy, Xinzhuan Guo, Shuangming Shan, Takuo Okuchi, Yoshinori Tange, Yuji Higo, Ken Ichi Funakoshi

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

To determine the phase boundary between the perovskite and post-perovskite structures in MnGeO3, in situ X-ray observations were carried out at pressures of 57-68 GPa and temperatures of 1000-1900 K using the Kawai-type high-pressure apparatus equipped with sintered diamond anvils interfaced with synchrotron radiation. The phase boundary was determined to be P (GPa) = 39.2 + 0.013T (K) based on Tsuchiya's (2003) gold pressure scale. The Clapeyron slope, dP/dT, of 13(+12/-5) MPa/K, determined in the present study is larger that of MgGeO3 and MgSiO3.

Original languageEnglish
Pages (from-to)89-92
Number of pages4
JournalAmerican Mineralogist
Volume96
Issue number1
DOIs
Publication statusPublished - 2011 Jan

Keywords

  • High pressure
  • In situ X-ray observation
  • Phase boundary
  • Post-perovskite

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

Fingerprint Dive into the research topics of 'Phase boundary between perovskite and post-perovskite structures in MnGeO<sub>3</sub> determined by in situ X-ray diffraction measurements using sintered diamond anvils'. Together they form a unique fingerprint.

Cite this