Thermal expansion and cation disorder in Bi2InNbO7

Qingdi Zhou; Brendan J. Kennedy; Valeska Ting; Ray L. Withers

doi:10.1016/j.jssc.2004.12.012

Thermal expansion and cation disorder in Bi₂InNbO₇

Qingdi Zhou, Brendan J. Kennedy^*, Valeska Ting, Ray L. Withers

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

The structure of the pyrochlore-type oxide Bi₂InNbO₇ has been investigated between room temperature and 700 °C using electron and synchrotron X-ray powder diffraction and at room temperature and 10 K using neutron diffraction methods. Bi₂InNbO₇ exhibits an A ₂B₂O₇ cubic pyrochlore-type average structure at all temperatures that is characterized by an apparently random mixing of the In³⁺ and Nb⁵⁺ cations on the octahedral B sites. The Bi cations on the eight-coordinate pyrochlore A sites are displacively disordered, presumably as a consequence of their lone pair electron configuration. Heating the sample does not alter this disorder. Crown copyright

Original language	English
Pages (from-to)	1575-1579
Number of pages	5
Journal	Journal of Solid State Chemistry
Volume	178
Issue number	5
DOIs	https://doi.org/10.1016/j.jssc.2004.12.012
Publication status	Published - May 2005

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10.1016/j.jssc.2004.12.012

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title = "Thermal expansion and cation disorder in Bi2InNbO7",

abstract = "The structure of the pyrochlore-type oxide Bi2InNbO7 has been investigated between room temperature and 700 °C using electron and synchrotron X-ray powder diffraction and at room temperature and 10 K using neutron diffraction methods. Bi2InNbO7 exhibits an A 2B2O7 cubic pyrochlore-type average structure at all temperatures that is characterized by an apparently random mixing of the In3+ and Nb5+ cations on the octahedral B sites. The Bi cations on the eight-coordinate pyrochlore A sites are displacively disordered, presumably as a consequence of their lone pair electron configuration. Heating the sample does not alter this disorder. Crown copyright",

keywords = "Bismuth pyrochlore, Cation disorder, Thermal expansion",

author = "Qingdi Zhou and Kennedy, \{Brendan J.\} and Valeska Ting and Withers, \{Ray L.\}",

year = "2005",

month = may,

doi = "10.1016/j.jssc.2004.12.012",

language = "English",

volume = "178",

pages = "1575--1579",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

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TY - JOUR

T1 - Thermal expansion and cation disorder in Bi2InNbO7

AU - Zhou, Qingdi

AU - Kennedy, Brendan J.

AU - Ting, Valeska

AU - Withers, Ray L.

PY - 2005/5

Y1 - 2005/5

N2 - The structure of the pyrochlore-type oxide Bi2InNbO7 has been investigated between room temperature and 700 °C using electron and synchrotron X-ray powder diffraction and at room temperature and 10 K using neutron diffraction methods. Bi2InNbO7 exhibits an A 2B2O7 cubic pyrochlore-type average structure at all temperatures that is characterized by an apparently random mixing of the In3+ and Nb5+ cations on the octahedral B sites. The Bi cations on the eight-coordinate pyrochlore A sites are displacively disordered, presumably as a consequence of their lone pair electron configuration. Heating the sample does not alter this disorder. Crown copyright

AB - The structure of the pyrochlore-type oxide Bi2InNbO7 has been investigated between room temperature and 700 °C using electron and synchrotron X-ray powder diffraction and at room temperature and 10 K using neutron diffraction methods. Bi2InNbO7 exhibits an A 2B2O7 cubic pyrochlore-type average structure at all temperatures that is characterized by an apparently random mixing of the In3+ and Nb5+ cations on the octahedral B sites. The Bi cations on the eight-coordinate pyrochlore A sites are displacively disordered, presumably as a consequence of their lone pair electron configuration. Heating the sample does not alter this disorder. Crown copyright

KW - Bismuth pyrochlore

KW - Cation disorder

KW - Thermal expansion

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U2 - 10.1016/j.jssc.2004.12.012

DO - 10.1016/j.jssc.2004.12.012

M3 - Article

SN - 0022-4596

VL - 178

SP - 1575

EP - 1579

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 5

ER -

Thermal expansion and cation disorder in Bi₂InNbO₇

Abstract

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