(Ba,K)3Bi2O7: A layered bismuth oxide

R. J. Cava, T. Siegrist, W. F. Peck, J. J. Krajewski, B. Batlogg, J. Rosamilia

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The synthesis and crystal structure of a new perovskite-based bismuth oxide are reported. The phase, of composition Ba1.7K1.3Bi2O7, is the n=2 member of the Ruddlesden-Popper series An+1BnO3n+1. It has tetragonal symmetry, space group I4/mmm, with unit-cell dimensions a=4.2477(6), and c=21.885(3). The phase is synthesized for the alkali metals K and Rb from KOH (RbOH)+Ba(OH)2 H2O melts. The stoichiometry is apparently not easily varied. The phase is not superconducting down to 2 kelvin.

Original languageEnglish (US)
Pages (from-to)9746-9748
Number of pages3
JournalPhysical Review B
Issue number17
StatePublished - Jan 1 1991
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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    Cava, R. J., Siegrist, T., Peck, W. F., Krajewski, J. J., Batlogg, B., & Rosamilia, J. (1991). (Ba,K)3Bi2O7: A layered bismuth oxide. Physical Review B, 44(17), 9746-9748. https://doi.org/10.1103/PhysRevB.44.9746