Preparation, structure, and properties of strontium-doped lanthanum chromites: La1−xSrxCrO3

Devi, Sujatha P and Rao, Subba M (1992) Preparation, structure, and properties of strontium-doped lanthanum chromites: La1−xSrxCrO3. In: Journal of Solid State Chemistry, 98 (2). pp. 237-244.

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Abstract

Strontium-doped lanthanum chromites, La1−xSrxCrO3, have been synthesised to investigate the effect of strontium doping on the stability and physico-chemical characteristics of the perovskite LaCrO3. Both microscopic and X-ray examinations show that the materials exist as single phase perovskite structure for all compositions up to 50 mole% strontium substitution. The materials have been further characterized by infrared and electron paramagnetic resonance spectra. These materials show a good sinterability even in air at 1773 K. Electrical conductivity of thse perovskites has been measured as a function of temperature. Electrical conductivity has been found to be a maximum at x=0.2. The observed electrical and magnetic properties are consistent with activated polaron transport as the mechanism for electrical conduction in these materials.

Item Type:	Journal Article
Publication:	Journal of Solid State Chemistry
Publisher:	Elsevier science
Additional Information:	Copyright of this article belongs to Elsevier science.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	02 May 2011 04:44
Last Modified:	02 May 2011 04:44
URI:	http://eprints.iisc.ac.in/id/eprint/37351

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