A neutron powder diffraction study on BaBi0.5Sb0.5O3

被引：27
作者：
Fu, WT [1 ]
机构：
[1] Leiden Univ, Leiden Inst Chem, Gorlaeus Labs, NL-2300 RA Leiden, Netherlands
来源：
SOLID STATE COMMUNICATIONS | 2000年 / 116卷 / 08期
关键词：
chemical synthesis; crystal structure and symmetry;
D O I：
10.1016/S0038-1098(00)00354-9
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The crystal structure of ordered perovskite BaBi0.5Sb0.5O3 has been reinvestigated by Rietveld analysis of neutron powder diffraction data. It was found that the rhombohedral space group R (3) over bar describes better the structure, which can be viewed as distortions from the ideal cubic perovskite by the cooperative tilt of BiO6 and SbO6 octahedra and the systematic oxygen displacement away from Bi towards Sb. The refined Bi-O and Sb-O bond distances are 2.278 and 2.020 Angstrom, respectively, characteristics of Bi(III) and Sb(V) ions. (C) 2000 Published by Elsevier Science Ltd.
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页码：461 / 464
页数：4
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