Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 179, Issue 7, Pages 2120-2125Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2006.04.013
Keywords
metallic perovskite oxides; Pauli paramagnetic oxides
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The perovskites Sr2VMoO6 and Ca2VMoO6 have been synthesized by liquid-mix technique in citrate melts, and their electronic, magnetic and structural properties have been investigated. No signs of V/Mo ordering are seen by synchrotron X-ray powder diffraction, but despite the chemical disorder both oxides are highly conductive and Pauli paramagnetic. Electrical conductivities of these solid solutions are comparable or higher than those reported for polycrystalline AMoO(3) end members. It is suggested that the delocalized metallic conductivity of these compounds with two different transition-metal atoms implies valence equilibrium between the degenerate oxidation-state couples V4+Mo4+ and V3+Mo5+. (C) 2006 Elsevier Inc. All rights reserved.
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