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VOLUME 82 | ISSUE 10 | PAGE 724 CaCuMn6O 12 vs. CaCu2Mn5O12: a comparative study O. Volkova, E. Goodilin, A. Vasiliev, D. Khomskii+, N. Tristan*, P. Kerschl*, Yu. Skourski*, K.-H. Mueller*, B. Buechner* Moscow State University, 119992 Moscow, Russia +Koeln University, D-50937 Koeln, Germany *Leibniz Institute for Solid State and Materials Research, D-01171 Dresden, Germany PACS: 72.80.Ga, 75.10.-b, 75.47.Gk Abstract The ferrimagnetic compounds Ca(CuxMn3-x)Mn4O12 of double distorted perovskites AC3B4O12 family exhibit a rapid increase of the ferromagnetic component in magnetization at partial substitution of square coordinated (Mn3+)C for (Cu2+)C. In transport properties this is seen in a change of semiconducting type of resistivity for the metallic one. The evolution in magnetic properties of Ca(CuxMn3-x)Mn4O12 is driven by strong antiferromagnetic exchange interaction of (Cu2+)C with octahedra coordinated (Mn3+/4+)B. The competing interactions of (Mn3+)C with (Mn3+/4+)B lead to the formation of non - collinear magnetic structures which can be aligned by magnetic field. Download PS file (GZipped, 195.9K)  |  Download PDF file (236.5K) Список работ, цитирующих данную статью, см. здесь. List of articles citing this article can be found here.