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Synthesis and structure of some interesting oxides of bismuth

Gopalakrishnan, J (1986) Synthesis and structure of some interesting oxides of bismuth. In: Proceedings of the Indian Academy of Sciences - Chemical Sciences, 96 (6). pp. 449-458.

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Synthesis and structures of several new oxides containing bismuth are described. Three types of structures are common among the multinary oxides containing trivalent bismuth. They are the sillenite structure of γ-Bi2O3, the layered perovskite structure of Aurivillius phases and the pyrochlore structure. The influence of Bi3+∶6s 2 lone pair electrons is seen in all the three structures. In transition metal oxides containing trivalent bismuth,d o cations (Ti4+, Nb5+, W6+) stabilize the layered perovskite structure, while cations containing partially-filledd orbitals (V4+, Cr3+, Fe3+) favour pyrochlore-related structures. Ferroelectric distortion ofMO6 octahedra of thed o cations seems to play an important role in stabilizing layered perovskite structures.

Item Type: Journal Article
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Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 01 Feb 2010 07:31
Last Modified: 19 Sep 2010 05:39
URI: http://eprints.iisc.ernet.in/id/eprint/21916

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