EXAFS studies of the cation sites in BIMEVOX fast-ion conductors

Chadwick, Alan V., Colli, C., Maltese, C., Morrison, G., Abrahams, Isaac, Bush, A. (1998) EXAFS studies of the cation sites in BIMEVOX fast-ion conductors. Solid State Ionics, 119 (1-4). pp. 79-84. ISSN 0167-2738. (doi:10.1016/S0167-2738(98)00486-X) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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http://dx.doi.org/10.1016/S0167-2738(98)00486-X

Abstract

Extended X-ray absorption fine structure (EXAFS) has been used to study the local environment of the dopant ME cation in gamma-phase BIMEVOX.10, where ME = Co, Cu, Zn, Ni and Gd. It is known that Co, Cu and Zn occupy the V site and the EXAFS show that the local environment of these cations is relatively well-ordered with four nearest neighbour oxygen ions. In contrast, the EXAFS for the Gd cation shows a significantly higher coordination number and indicates that this cation predominantly occupies the Bi site. The EXAFS of the Ni samples provided no reliable structural information as they indicated that a significant fraction of the dopant was present as NiO, suggesting that there are difficulties in the preparation of phase-pure BINIVOX. (C) 1999 Elsevier Science B.V. All rights reserved.

Item Type: Article
DOI/Identification number: 10.1016/S0167-2738(98)00486-X
Uncontrolled keywords: BICOVOX; BICUVOX; BIGDVOX; BIMEVOX; BINIVOX; BIZNVOX; cation environment; EXAFS; local structure
Subjects: Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: M. Nasiriavanaki
Date Deposited: 28 Jun 2009 11:38 UTC
Last Modified: 10 Jun 2019 11:51 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/17200 (The current URI for this page, for reference purposes)
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