High-pressure phase transitions in BiMO3 (M=Al, Ga, and In): In situ x-ray diffraction and Raman scattering experiments

被引：39

作者：

Yusa, Hitoshi ^{[1
]}

Belik, Alexei A. ^{[2
]}

Takayama-Muromachi, Eiji ^{[2
]}

Hirao, Naohisa ^{[3
]}

Ohishi, Yasuo ^{[3
]}

机构：

[1] Natl Inst Mat Sci, Exploratory Nanomat Lab, Tsukuba, Ibaraki 3050044, Japan

[2] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitechton, Tsukuba, Ibaraki 3050044, Japan

[3] Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 21期

关键词：

bismuth compounds; crystal structure; ferroelectric transitions; high-pressure solid-state phase transformations; quenching (thermal); Raman spectra; space groups; X-ray diffraction; CRYSTAL-STRUCTURE; TEMPERATURE; BIFEO3; PEROVSKITES; LAALO3; BIALO3; OXIDE;

D O I：

10.1103/PhysRevB.80.214103

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In situ x-ray diffraction and Raman scattering experiments using a diamond anvil cell revealed high-pressure forms of BiMO3 (M=Al, Ga, and In) under hydrostatic conditions at room temperature. Various perovskite-type structures are found in each compound under pressure up to 11 GPa. However, none of the high-pressure forms was quenched at atmospheric pressure. All of the phase transitions are confirmed to be reversible. During decompression, symmetry changes, R3m to R3c, Cmcm to Cm, and Pnma to Pna2(1) are observed in BiAlO3, BiGaO3, and BiInO3 perovskite, respectively. Structure systematics of the BiMO3 perovskites is given on the basis of the cationic size of M3+.

引用

页数：10

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