Nihon Kessho Gakkaishi
Online ISSN : 1884-5576
Print ISSN : 0369-4585
Part 2. Crystal Structure and Physical Properties of Minerals in the Earth's and Planetary Interior
Structural Study on Analogs of the Earth's Interior Materials as a Function of Temperature
- on CaGeO3 High-Pressure Perovskite Phase
Akihiko NAKATSUKA
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Volume 60 (2018) Issue 1 Pages 24-31

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Abstract

Structural studies on analogs of the Earth's interior materials can give important insights into the understanding for material construction, physical properties and dynamics in the Earth's interior. In particular, CaGeO3 high-pressure perovskite phase is an excellent low-pressure analog of MgSiO3 bridgmanite, the most dominant constituent in the Earth's lower mantle, with the orthorhombic Pbnm perovskite-type structure. I here review our recent structural research of CaGeO3 perovskite as a function of temperature. The research leads to the earth-scientific implication as to the phase transition of MgSiO3 bridgmanite in the Earth's lower mantle.

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© 2018 The Crystallographic Society of Japan
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