Electronic, magnetic and structural properties of A2VMoO6 perovskites (A=Ca, Sr)

被引：25

作者：

Karen, P. ^{[1
]}

Moodenbaugh, A.R. ^{[2
]}

Goldberger, J. ^{[3
]}

Santhosh, P.N. ^{[3
]}

Woodward, P.M. ^{[3
]}

机构：

[1] Department of Chemistry, University of Oslo, N-0315 Oslo

[2] Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton

[3] Department of Chemistry, Ohio State University, Columbus, OH 43210-1185

来源：

Journal of Solid State Chemistry | 2006年 / 179卷 / 07期

关键词：

Metallic perovskite oxides; Pauli paramagnetic oxides;

D O I：

10.1016/j.jssc.2006.04.013

中图分类号：

学科分类号：

摘要：

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 AMoO3 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+. © 2006 Elsevier Inc. All rights reserved.

引用

页码：2120 / 2125

页数：5

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