$ALaFeVO_6$ (A=Ca, Sr): New Double-Perovskite Oxides

Ramesha, K and Gopalakrishnan, J and Smolyaninova, V and Greene, RL (2001) $ALaFeVO_6$ (A=Ca, Sr): New Double-Perovskite Oxides. In: Journal of Solid State Chemistry, 162 (2). pp. 250-253.

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Abstract

We describe the synthesis and structural characterization of two new double perovskites, $ALaFeVO_6$ (A=Ca, Sr), where $Fe^{3+}/V^{4+}$ are partially ordered at the octahedral sites. The small charge difference between $Fe^{3+}/V^{4+}$ precludes the formation of a long-range ordered double-perovskite structure even on prolonged annealing at $1000^O\hspace{2mm}C$. Electrical conductivity and magnetic susceptibility measurements show that both phases are weakly ferrimagnetic semiconductors where disordered $Fe^{3+}- O-V^{4+}$ pairs persist even up to $\sim$350 K.

Item Type:	Journal Article
Publication:	Journal of Solid State Chemistry
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	Double perovskite;ALaFeVO6 (A5Ca, Sr).
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	16 Jun 2006
Last Modified:	19 Sep 2010 04:29
URI:	http://eprints.iisc.ac.in/id/eprint/7644

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