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Anisotropic oxygen diffusion in PrBaCo2O5.5 double perovskites

Seymour, I. D.; Tarancón, A.; Chroneos, A.; Parfitt, D.; Kilner, J. A. and Grimes, R. W. (2012). Anisotropic oxygen diffusion in PrBaCo2O5.5 double perovskites. Solid State Ionics, 216 pp. 41–43.

DOI (Digital Object Identifier) Link: http://dx.doi.org/10.1016/j.ssi.2011.09.002
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Abstract

Using classical molecular dynamics in conjunction with an established set of Born model potentials the oxygen ion diffusion mechanism and energetics in the double perovskite PrBaCo2O5.5 were investigated in the temperature range from 650 degrees C to 1000 degrees C. An anisotropic oxygen diffusion mechanism with diffusion occurring predominantly in the Pr-O and Co-O layers was observed. An activation energy of E-a = 0.35 eV was measured for the range of temperatures under study. The results are discussed in view of recent experimental and theoretical results of this and other compounds of the LnBaCo(2)O(5) (+) (delta). family.

Item Type: Journal Article
Copyright Holders: 2012 Elsevier
ISSN: 0167-2738
Academic Unit/Department: Mathematics, Computing and Technology > Engineering & Innovation
Item ID: 35259
Depositing User: Alexander Chroneos
Date Deposited: 06 Nov 2012 09:51
Last Modified: 07 Nov 2012 01:23
URI: http://oro.open.ac.uk/id/eprint/35259
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