Title

The Structure of BaK0.03Bi0.97O3 by Single-Crystal X-Ray Diffraction

Document Type

Article

Publication Date

12-1-1991

Abstract

We determined by x-ray diffraction the structure of a slightly K-doped BaBiO3 single-crystal. The best refinements were obtained by describing the structure in the monoclinic 12/m space group similarly to the structure of the undoped compound. In this description the Bi cations occupy two crystallographically independent sites occupied by disproportionated Bi3+ and Bi5+ cations, respectively. These cations are partially ordered. Surprisingly we found that for this low K concentration, the K atoms are located on one of the two Bi sites and are not, as expected, substituting for the Ba cations.

DOI

10.1016/0921-4534(91)92151-Z

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