Home
For authors
Submission status

Current
Archive (English)
Archive
   Volumes 61-80
   Volumes 41-60
   Volumes 21-40
   Volumes 1-20
   Volumes 81-92
      Volume 92
      Volume 91
      Volume 90
      Volume 89
      Volume 88
      Volume 87
      Volume 86
      Volume 85
      Volume 84
      Volume 83
      Volume 82
      Volume 81
Search
VOLUME 82 (2005) | ISSUE 10 | PAGE 724
CaCuMn6O 12 vs. CaCu2Mn5O12: a comparative study
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.