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Lookup NU author(s): Dr Alan Thursfield, Professor Ian Metcalfe
The mixed conducting perovskite-type La0.8Sr0.2Co1-yMnyO3 +/- delta family has been synthesised by a combinatorial method. This system including the two end member materials (y = 0 and 1) have been studied using temperature programmed methods in order to relate structure and composition to oxygen exchange under a hydrogen atmosphere. Oxygen is removed in two steps: firstly, labile surface oxygen from 350 to 450 degrees C and then more strongly bound lattice oxygen. A relationship between the B-site manganese and cobalt content and ease of removal of lattice oxygen was demonstrated over the temperature range of 600-820 degrees C. Removal of labile surface oxygen was independent of the B-site composition but associated with A-site cations on the external surface of the crystallites. (c) 2012 Elsevier B.V. All rights reserved.
Author(s): Thursfield A, Rossiny JCH, Fearn S, Kilner JA, Metcalfe IS
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 18th International Conference on Solid State Ionics (SSI)
Year of Conference: 2012
Pages: 182-185
Date deposited: 28/03/2013
ISSN: 0167-2738
Publisher: Elsevier BV
URL: http://dx.doi.org/10.1016/j.ssi.2012.04.013
DOI: 10.1016/j.ssi.2012.04.013
Library holdings: Search Newcastle University Library for this item
Series Title: Solid State Ionics
ISBN: 18727689
