Magnetism of Higher Borides
T. Mori
National Institute for Materials Science, Nanoscale Materials Center, Namiki 1-1, Tsukuba, 305-0044, Japan
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Received: 9 07 2007;
Magnetism of borides which contain the B12 icosahedra as a structural building block are attracting increasing interest since they exhibit unexpectedly strong magnetic interactions, despite being magnetically dilute f-electron insulators. The magnetic behavior among the different compounds has also been found to be diverse. The f-electron dependence of magnetic B12 icosahedra borides is compared, and found to be different from conventional mechanisms. The TbB25 system is also investigated further and the transition is assigned to a typical antiferromagnetic transition.
DOI: 10.12693/APhysPolA.113.231
PACS numbers: 81.05.Je, 75.50.Ee