Synthesis and characterization of new phases: Sr3.75K1.75 Bi3O12 and Sr3.1Na2.9Bi3O12

J. S. Pshirkov, S. M. Kazakov, A. M. Abakumov, S. N. Putilin, E. V. Antipov, C. Bougerol-Chaillout, O. I. Lebedev, G. Van Tendeloo

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

New hexagonal phases were found in the Sr-K(Na)-Bi-O systems and characterized by X-ray powder diffraction, electron diffraction, and high-resolution electron microscopy (HREM). The crystal structures of Sr3.75K1.75Bi3O12 (space group P6̄2m, a = 10.4434(1) Å, c = 3.37932(4) Å, R(I) = 0.019, R(p) = 0.055) and Sr3.1Na2.9Bi3O12 (space group P62m, a = 10.1102(4) A, c = 3.3389(1) A, R(I) = 0.024, R(p) = 0.070) were refined using X-ray powder data. The structures consist of chains of BiO6 octahedra linked by the common edges whereas A cations occupy the interstices between the chains. This structure can be considered as the end member of the new (Sr, K)(6n+2)Bi(3n-3)O(12n) homologous series found by electron microscopy. The homologues with n = 4, 5, and 6 were observed, and their structures were deduced from HREM observations. (C) 2000 Academic Press.

Original languageEnglish
Pages (from-to)492-502
Number of pages11
JournalJournal of Solid State Chemistry
Volume152
Issue number2
DOIs
Publication statusPublished - 2000
Externally publishedYes

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