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.
- High pressure and temperature
- Phase boundary
ASJC Scopus subject areas
- Materials Science(all)
- Geochemistry and Petrology