Crystal structure and dielectric and magnetic properties of BiCrO3 as a ferroelectromagnet

被引：122

作者：

Niitaka, S ^{[1
]}

Azuma, M

Takano, M

Nishibori, E

Takata, M

Sakata, M

机构：

[1] JST, PRESTO, Kawaguchi, Saitama 3320012, Japan

[2] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

[3] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648601, Japan

来源：

SOLID STATE IONICS | 2004年 / 172卷 / 1-4期

关键词：

ferroelectromagnet; Bi-contained perovskite; BiCrO3; noncentrosymmetric structure; parasitic ferromagnetism;

D O I：

10.1016/j.ssi.2004.01.060

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated crystal structure, dielectric and magnetic properties of BiCrO3. The structure of BiCrO3 at room temperature is a highly distorted perovskite-type one with monoclinic C2 symmetry which is the same as that of the ferroelectric phase in BiMnO3. BiCrO3 undergoes a structural phase transition from orthorhombic Pnma with centrosymmetty to monoclinic C2 without centrosymmetry at 440 K. It accompanies a dielectric anomaly, implying a ferroelectric transition. BiCrO3 exhibits a parasitic feffomagnetism at 114 K. (C) 2004 Elsevier B.V. All rights reserved.

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页码：557 / 559

页数：3

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