Synthesis and structure of BaSiO3 hexagonal perovskite

HITOSHI YUSA; NAGAYOSHI SATA; YASUO OHISHI

doi:10.14824/kobutsu.2005.0.25.0

Abstracts for Annual Meeting of the Mineralogical Society of Japan

2005 Annual Meeting of the Mineralogical Society of Japan

Session ID : K2-03

DOI https://doi.org/10.14824/kobutsu.2005.0.25.0

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Synthesis and structure of BaSiO3 hexagonal perovskite

*HITOSHI YUSA, NAGAYOSHI SATA, YASUO OHISHI

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Keywords: hexagonal perovskite, high pressure

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

A hexagonal perovskite is confirmed in BaSiO3 at 32 GPa. The structure exhibits 9R-type sequence with a space group of R-3m. This is the second example of the hexagonal silicate perovskite followed on SrSiO3 compound. It is interested that the degree of face sharing SiO6 octahedra increases in the structure with increasing effective ionic radii of divalent cations.

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