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Temperature dependence of magnetism near defects in SrB_6

T. Jarlborg
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Abstract

The T-dependence of magnetic moments in SrB_6 is studied through spin-polarized band calculations for a supercell of Sr_{27}B_{156} containing a B_6 vacancy. The magnetic moment decays rather quickly with T despite the fact that only electronic Fermi-Dirac effects are included. This result and the T-dependence of moments near a La impurity can hardly explain the reports of a very high Curie temperature in hexaborides, but suggest that the magnetism is caused by some other type of impurity.

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T. Jarlborg. 2003-05-14. Temperature dependence of magnetism near defects in SrB_6. https://doi.org/10.1088/0953-8984%2F15%2F14%2F104

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