High-pressure phase transitions in the 6H perovskitesBa3MSb2O9(M =Mg, Ni, Zn)

P. D. Battle*, C. W. Jones, P. Lightfoot, R. Strange

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The 6H perovskitesBa3MSb2O9(M =Mg, Ni, Zn)have been subjected to pressures of up to 5.5 GPa. No structural phase transitions were observed in Ba3MgSb2O9. Ba3NiSb2O9 transformed from a phase containing Sb2O9 dimers formed by face-sharing octahedra into a phase containing NiSbO9 dimers. This was confirmed by a combination of X-ray powder diffraction and EXAFS. Ba3ZnSb2O9 transformed into a cubic perovskite with a partial ordering of zinc and antimony over the octahedral sites.

Original languageEnglish
Pages (from-to)144-150
Number of pages7
JournalJournal of Solid State Chemistry
Volume85
Issue number1
DOIs
Publication statusPublished - 1 Jan 1990

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