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HIGH-PRESSURE PHASE-TRANSITIONS IN THE 6H PEROVSKITES BA3MSB2O9 (M=MG, NI, ZN)

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. © 1990 Academic Press, Inc. All rights reserved.
Publication status:
Published

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Authors


LIGHTFOOT, P More by this author
STRANGE, R More by this author
Journal:
JOURNAL OF SOLID STATE CHEMISTRY
Volume:
85
Issue:
1
Pages:
144-150
Publication date:
1990-03-05
DOI:
EISSN:
1095-726X
ISSN:
0022-4596
URN:
uuid:f1caf2c3-4a8a-435b-b4e1-74b5727ac154
Source identifiers:
46450
Local pid:
pubs:46450
Language:
English

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