Synthesis, Crystal Structure, Magnetic Properties, and Electronic Structure of the New Ternary Vanadate CuMnVO4

A new magnetic oxide, CuMnVO4, was prepared, and its crystal structure was determined by single-crystal X-ray diffraction. The magnetic properties of CuMnVO4 were characterized by magnetic susceptibility and specific heat measurements, and the spin exchange interactions of CuMnVO4 were analyzed on t...

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Bibliographic Details
Published in:Inorganic chemistry 2005-05, Vol.44 (9), p.3087-3093
Main Authors: Ben Yahia, Hamdi, Gaudin, Etienne, Darriet, Jacques, Banks, Michael, Kremer, Reinhard K, Villesuzanne, Antoine, Whangbo, Myung-Hwan
Format: Article
Language:English
Subjects:
Chemical Sciences
Material chemistry
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Summary:A new magnetic oxide, CuMnVO4, was prepared, and its crystal structure was determined by single-crystal X-ray diffraction. The magnetic properties of CuMnVO4 were characterized by magnetic susceptibility and specific heat measurements, and the spin exchange interactions of CuMnVO4 were analyzed on the basis of spin-polarized electronic band structure calculations. CuMnVO4 contains MnO4 chains made up of edge-sharing MnO6 octahedra containing high-spin Mn2+ cations. Our work shows that CuMnVO4 undergoes a three-dimensional antiferromagnetic transition at ∼20 K. Both the intrachain and interchain spin exchanges are antiferromagnetic, and the interchain spin exchange is not negligible compared to the intrachain spin exchange.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic048244y