Synthesis, crystal structure, magnetic properties, and electronic structure of the new ternary vanadate CuMnVO4 |
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Authors: | Ben Yahia Hamdi Gaudin Etienne Darriet Jacques Banks Michael Kremer Reinhard K Villesuzanne Antoine Whangbo Myung-Hwan |
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Affiliation: | Institut de Chimie de la Matière Condensée de Bordeaux, 87 Avenue du Docteur Schweitzer, 33608 Pessac Cedex, France. |
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Abstract: | 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 approximately 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. |
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