In situ solid state oxidation reaction for La sub(1-x)Sr sub(x)MnO sub(3) (x = 0, 0.1, 0.2 and 0.3) formation

In situ solid state oxidation reaction for an alternative La sub(1-x)Sr sub(x )MnO sub(3) (x = 0, 0.1, 0.2 and 0.3) formation is reported. Samples have been obtained by using strontium peroxide, lanthanum and manganese (III) oxide reagents. Strontium peroxide has induced the oxidation of Mn super(+3...

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Published in:Journal of magnetism and magnetic materials 2001-05, Vol.226, p.812-814
Main Authors: Marques, R F C, Jafelicci M, Jr, Paiva-Santos, C O, Varanda, L C, Godoi, R H M
Format: Article
Language:English
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Summary:In situ solid state oxidation reaction for an alternative La sub(1-x)Sr sub(x )MnO sub(3) (x = 0, 0.1, 0.2 and 0.3) formation is reported. Samples have been obtained by using strontium peroxide, lanthanum and manganese (III) oxide reagents. Strontium peroxide has induced the oxidation of Mn super(+3) to Mn super(+4 ). Lanthanum strontium-doped manganite was obtained without secondary phase formation. La sub(0.825)Sr sub(0.175)MnO sub(3) showed two structural transitions, the first from 88 to 373K and the second at 1073K, which are explained by Jahn-Teller effect at low temperature and cation displacement at high temperature. copyright 2001 Elsevier Science B.V. All rights reserved.
ISSN:0304-8853