Synthesis and structure of oxygen-deficient La2NiCoO5 and LaSrCo2O5 phases

Ramesh, Sivarajan and Manoharan, Solomon S and Hegde, Manjanath S (1995) Synthesis and structure of oxygen-deficient La2NiCoO5 and LaSrCo2O5 phases. In: Journal of Materials Chemistry, 5 (7). pp. 1053-1057.

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Abstract

The La2NiCoO5 and LaSrCo2O5 phases have been synthesized by the temperature-programmed reduction (TPR) of the parent mixed perovskites LaNi0.5Co0.5O3 and La0.5Sr0.5CoO3, respectively, under an ammonia atmosphere. While La2NiCoO5 adopts a structure similar to the vacancy-ordered La2Ni2O5, LaSrCo2O5 crystallized in a brownmillerite-like structure. The reactivity of the perovskite oxides towards reduction by ammonia and the structure of the product oxides are found to be guided by factors such as the coordination and oxidation state of the transition-metal cations.

Item Type:	Journal Article
Publication:	Journal of Materials Chemistry
Publisher:	Royal Society of Chemistry
Additional Information:	Copyright of this article belongs to Royal Society of Chemistry.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	26 May 2011 06:58
Last Modified:	26 May 2011 06:58
URI:	http://eprints.iisc.ac.in/id/eprint/37943

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