PREPARATION AND CHARACTERIZATION OF THE PEROVSKITES BACE1-XBIXO3

被引：15

作者：

DROST, RJ ^{[1
]}

FU, WT ^{[1
]}

机构：

[1] LEIDEN UNIV,LEIDEN INST CHEM,GORLAEUS LABS,2300 RA LEIDEN,NETHERLANDS

来源：

MATERIALS RESEARCH BULLETIN | 1995年 / 30卷 / 04期

关键词：

BARIUM; BISMUTH; CERIUM; PEROVSKITE; SUPERCONDUCTORS;

D O I：

10.1016/0025-5408(95)00018-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The solid solution BaCe1-xBixO3 has been prepared and characterized by X-ray diffraction. This series of compounds has a cubic perovskite-related structure. The bismuth-rich phase (x greater than or equal to 0.80) is isostructural to the monoclinic parent compound BaBiO3, (S.G. I 2/m), which has an ordered arrangement of Bi3+ and Bi5+ ions. The region of 0 less than or equal to x<0.8 has orthorhombic symmetry (S.G. Pbnm) with a random distribution of Bi atoms. Although this structural feature is quite similar to that of the superconducting BaPb1-xBixO3 system, all samples of BaCe1-xBixO3 show an increase in electrical resistivity upon the Ce doping. These results are explained in terms of the competition between the bandwidth and the charge disproportionation.

引用

页码：471 / 478

页数：8

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