Infrared signature of charge disproportionation in BaBiO3 and related compounds

被引：14
|
作者：
Lobo, RPSM
Gervais, F
机构：
[1] Ctr. Rech. sur Phys. Hautes T., CNRS
来源：
SOLID STATE COMMUNICATIONS | 1996年 / 98卷 / 01期
关键词：
high-T-c superconductors; phonons; valence fluctuations; light absorption and reflection;
D O I：
10.1016/0038-1098(95)00666-4
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The infrared phonon spectrum of BaBiO3 is compared with that of the double perovskite Ba2Yb3+Bi5+O6. Th, spectra of both compounds have the same trend and it is shown that charge disproportionation plays a major role in their dielectric response. The disproportionation of Bi into Bi3+ and Bi5+ in BaBiO3 (which can be written as Ba2Bi3+Bi5+O6) is confirmed.
引用
收藏
页码：61 / 63
页数：3
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