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Influence of Geometrical Factors on the Physico-Chemical Properties of Perovskite and Layered Perovskite Oxides

Ganguly, P (1987) Influence of Geometrical Factors on the Physico-Chemical Properties of Perovskite and Layered Perovskite Oxides. In: Izvestiya Sibirskogo Otdeleniya Akademiy Nauk - Seriya Khimicheskikh Nauk (6). pp. 21-29.

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Abstract

A brief qualitative comparison is made of perovskite ABO sub 3 and layered perovskite ABO sub 3 and layered perovskite A sub 2 BO sub 4 oxides with special emphasis on the influence of geometrical factors on certain physico-chemical properties. The layered perovskite oxides are distinguished from three-dimensional oxides by a looser packing, frustration in three-dimensional interactions, more internal pressure on B--O bonds for small tolerance factors, and by different values of site-percolation thresholds. Their influence on electronic configurations of metal ions, stabilities and syntheses of compounds is discussed. The influence of increased anisotropy in layered oxides on localisation of charge carriers and in suppressing the onset of long-range ferromagnetic ordering is also discussed.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Mezhdunarodnaya Kniga.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 21 Oct 2010 08:57
Last Modified: 21 Oct 2010 08:57
URI: http://eprints.iisc.ernet.in/id/eprint/33335

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