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 journalArticle

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 - Jan 2011

Fingerprint

Diamond
perovskite
Phase boundaries
anvils
diamond
diamonds
X-ray diffraction
X ray diffraction
diffraction
synchrotron radiation
x rays
gold
slopes
Synchrotron radiation
Gold
X rays
temperature
in situ
Temperature
radiation

Keywords

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

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Phase boundary between perovskite and post-perovskite structures in MnGeO3 determined by in situ X-ray diffraction measurements using sintered diamond anvils. / Yamazaki, Daisuke; Ito, Eiji; Katsura, Tomoo; Yoshino, Takashi; Zhai, Shuangmeng; Fukui, Hiroshi; Shatskiy, Anton; Guo, Xinzhuan; Shan, Shuangming; Okuchi, Takuo; Tange, Yoshinori; Higo, Yuji; Funakoshi, Ken Ichi.

In: American Mineralogist, Vol. 96, No. 1, 01.2011, p. 89-92.

Research output: Contribution to journalArticle

Yamazaki, Daisuke ; Ito, Eiji ; Katsura, Tomoo ; Yoshino, Takashi ; Zhai, Shuangmeng ; Fukui, Hiroshi ; Shatskiy, Anton ; Guo, Xinzhuan ; Shan, Shuangming ; Okuchi, Takuo ; Tange, Yoshinori ; Higo, Yuji ; Funakoshi, Ken Ichi. / Phase boundary between perovskite and post-perovskite structures in MnGeO3 determined by in situ X-ray diffraction measurements using sintered diamond anvils. In: American Mineralogist. 2011 ; Vol. 96, No. 1. pp. 89-92.
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AU - Yamazaki, Daisuke

AU - Ito, Eiji

AU - Katsura, Tomoo

AU - Yoshino, Takashi

AU - Zhai, Shuangmeng

AU - Fukui, Hiroshi

AU - Shatskiy, Anton

AU - Guo, Xinzhuan

AU - Shan, Shuangming

AU - Okuchi, Takuo

AU - Tange, Yoshinori

AU - Higo, Yuji

AU - Funakoshi, Ken Ichi

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AB - 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.

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