Post-Perovskite Phase Transition in MgSiO <sub>3</sub>

Murakami, Motohiko; Hirose, Kei; Kawamura, Katsuyuki; Sata, Nagayoshi; Ohishi, Yasuo

doi:10.1126/science.1095932

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Post-Perovskite Phase Transition in MgSiO 3

Published in Science • Apr 13, 2004

Authors:

Motohiko Murakami

Kei Hirose

Katsuyuki Kawamura

Abstract

In situ x-ray diffraction measurements of MgSiO3 were performed at high pressure and temperature similar to the conditions at Earth's core-mantle boundary. Results demonstrate that MgSiO3 perovskite transforms to a new high-pressure form with stacked SiO6-octahedral sheet structure above 125 gigapas...

Subject

Perovskite (structure)

Phase transition

Phase (matter)

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