Phase boundary between ilmenite and perovskite structures in MnGeO3 determined by in situ X-ray diffraction measurements |
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| Authors: | Daisuke Yamazaki Eiji Ito Yoshinori Tange Takashi Yoshino Shuangmeng Zhai Hiroshi Fukui Anton Shatskiy Tomoo Katsura Ken-ichi Funakoshi |
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| Institution: | (1) Institute for Study of the Earth’s Interior, Okayama University, Misasa Tottori, 682-0193, Japan;(2) Geodynamics Research Center, Matsuyama, Ehime, Japan;(3) Japan Synchrotron Radiation Research Institute, Sayo, Hyogo, Japan |
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| 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 700–1,400°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. |
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| Keywords: | MnGeO3 Ilmenite Perovskite High pressure and temperature Phase boundary |
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