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

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• 作者：Hamdi Ben Yahia ; Etienne Gaudin ; Jacques Darriet ; Michael Banks ; Reinhard K. Kremer ; Antoine Villesuzanne ; and Myung-Hwan Whangbo
• 刊名：Inorganic Chemistry
• 出版年：2005
• 出版时间：May 2, 2005
• 年：2005
• 卷：44
• 期：9
• 页码：3087 - 3093
• 全文大小：320K
• 年卷期：v.44,no.9(May 2, 2005)
• ISSN：1520-510X

文摘

A new magnetic oxide, CuMnVO₄, was prepared, and its crystal structure was determined by single-crystal X-raydiffraction. The magnetic properties of CuMnVO₄ were characterized by magnetic susceptibility and specific heatmeasurements, and the spin exchange interactions of CuMnVO₄ were analyzed on the basis of spin-polarizedelectronic band structure calculations. CuMnVO₄ contains MnO₄ chains made up of edge-sharing MnO₆ octahedracontaining high-spin Mn²⁺ cations. Our work shows that CuMnVO₄ undergoes a three-dimensional antiferromagnetictransition at ~20 K. Both the intrachain and interchain spin exchanges are antiferromagnetic, and the interchainspin exchange is not negligible compared to the intrachain spin exchange.