V., Aswin and Kumar, Pramod and Singh, Pooja and Gupta, Anurag and Rayaprol, S. and Dogra, Anjana (2015) Influence of Al doping in LaCoO3 on structural, electrical and magnetic properties. Journal of Materials Science, 50 (1). 366-373. ISSN 0022-2461

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Abstract

We report investigations on polycrystalline LaCo1-xAlxO3 (x = 0-0.9) bulk samples. The solid state synthesized samples showed a coexistence of rhombohedral and monoclinic phases in the intermediate concentrations (0.2 <= x <= 0.5) and pure rhombohedral phase otherwise. The observed effect of Al doping on dc transport has been analysed on the basis of small polaron hopping mechanism. The magnetisation results presented give evidence of weak ferromagnetism and anomalous temperature dependence of coercivity which we associate to the canting of the localised high-spin Co(III) and anti-symmetric exchange interactions at low temperatures.

Item Type:	Article
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	28 Sep 2016 05:42
Last Modified:	28 Sep 2016 05:42
URI:	http://npl.csircentral.net/id/eprint/1861

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