Thermal expansion of MgSiO3 perovskite at 20.5 GPa

Details Thermal expansion of MgSiO3 perovskite at 20.5 GPa Thermal expansion of MgSiO3 perovskite at 20.5 GPa

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21..899m&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 10, p. 899-902

Physics

18

Earth Mantle, Geochemistry, In Situ Measurement, Perovskites, Phase Transformations, Planetary Composition, Pressure Effects, Room Temperature, Temperature Effects, Thermal Expansion, X Ray Diffraction, Experiment Design, Synchrotron Radiation, Volume

Scientific paper

A high pressure and high temperature in-situ X-ray diffraction experiment of MgSiO3 perovskite was conducted using a sintered diamond multianvil apparatus (SDMA8) combined with the synchrotron radiation. The unit cell parameters of the perovskite were measured up to 1095 C at about 20.5 GPa. The thermal expansion coefficient is 0.8(+/- 0.8) x 10(exp -5)/K at 20.5 GPa and room temperature.

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