From rocksalt to perovskite: a metathesis route for the synthesis of perovskite oxides of current interest

Mandal, Tapas Kumar and Gopalakrishnan, J (2004) From rocksalt to perovskite: a metathesis route for the synthesis of perovskite oxides of current interest. In: Journal of Materials Chemistry, 14 (8). pp. 1273-1280.

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Abstract

Solid state metathesis reactions between lithium containing rocksalt metal oxides and appropriate lanthanum/ alkaline earth metal oxychloride/chloride provide a convenient route for the synthesis of several perovskite oxides of current interest, such as $LaCoO_3, LaMnO_3, AMnO_3$ and $ATiO_3 (A ~ Ca, Sr, Ba).$ Similarly, metathesis reactions between $Li_2TiO_3/Li_2ZrO_3$ and $PbSO_4$ (instead of $PbCl_2$) yield $PbTiO_3, PbZrO_3$ and $PbZr_{1-x}Ti_xO_3$ perovskites. $BaPbO_3$ and superconducting $BaPb_{0.75}Bi_{0.25}O_3$ could also be synthesized by the metathesis reaction between $Li_2PbO_3/Li_2(Pb,Bi)O_3$ and $Ba(OH)_2.8H_2O.$ Uniformly in all cases, the perovskite oxides were obtained in the form of loosely connected submicron sized particles at considerably lower temperatures than those usually employed for their synthesis by ceramic methods.

Item Type:	Journal Article
Publication:	Journal of Materials Chemistry
Publisher:	Royal Society of Chemistry
Additional Information:	The copyright belongs to Royal Society of Chemistry.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	19 May 2006
Last Modified:	19 Sep 2010 04:26
URI:	http://eprints.iisc.ac.in/id/eprint/6752

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