Suppression of A site charge disproportionation in Bi1-xLaxNiO3

被引：10

作者：

Ishiwata, S ^{[1
]}

Azuma, M

Takano, M

Nishibori, E

Takata, M

Sakata, M

机构：

[1] Kyoto Univ, Inst Chem Res, Uji, Kyoto, Japan

[2] Kyoto Univ, ICR, Kawaguchi, Saitama, Japan

[3] JST, PRESTO, Kawaguchi, Saitama, Japan

[4] Nagoya Univ, Sch Engn, Chigusa Ku, Nagoya, Aichi, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2003年 / 329卷

关键词：

perovskite; synchrotron powder XRD; bond valence sum; charge disproportionation; BiNiO3; metal-insulator transition;

D O I：

10.1016/S0921-4526(02)02585-1

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effect of the La substitution for Bi in newly found triclinic perovskite BiNiO3 was examined. The charge disproportionation of Bi ions into Bi3+ and Bi5+ was suppressed by 20% substitution. Bi0.8La0.2NiO3 showed a metal-insulator transition at around 300 K. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：813 / 814

页数：2

共 4 条

[1] Room-temperature monoclinic distortion due to charge disproportionation in RNiO3 perovskites with small rare-earth cations (R = Ho, Y, Er, Tm, Yb, and Lu):: A neutron diffraction study [J].