EXAFS studies of disorder in CdF2-PbF2 systems

Netshisaulu, T.T. and Catlow, C. Richard A. and Chadwick, Alan V. and Greaves, G.N. and Ngoepe, Phuti E. (1995) EXAFS studies of disorder in CdF2-PbF2 systems. Radiation Effects and Defects in Solids, 137 (1-4). pp. 1385-1389. ISSN 1042-0150. (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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Abstract

The local environments of Cd and Pb cations in the system Cd1-xPbxF2 (x = 0.6) have been measured by means of EXAFS. A comparative analysis of the Fourier transforms of the experimental data provides evidence of the Pb-F bond length being longer than the Cd-F one. Furthermore, our studies show a loss of structure around the Pb(L(111)) edge with increasing temperature. This suggests that the temperature-induced vacancies on the anion sub-lattice are preferentially located adjacent to Pb ions as previously observed in PbSnF4 mixed-metal fluorides. The results obtained accord well with our computer simulation findings.

Item Type: Article
Additional information: Document Type: Proceedings Paper
Uncontrolled keywords: EXAFS; computer simulation; PbF2; CdF2; Cd-0.4 Pb-0.6 F-2; vacancies
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK9001 Nuclear engineering
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: O.O. Odanye
Date Deposited: 03 Jun 2009 07:21
Last Modified: 15 Jul 2014 14:00
Resource URI: https://kar.kent.ac.uk/id/eprint/19408 (The current URI for this page, for reference purposes)
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