Memoirs of the Faculty of Science, Shimane University

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Memoirs of the Faculty of Science, Shimane University 12
1978-12-20 発行

通常強磁性体及び稀薄強磁性体に対する改良された分子場理論

Improved Molecular Field Theory for the Regular and Dilute Heisenberg Ferromagnets
Umetani, Ikumitsu
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Description
It is shown that the constant-coupling approximation enables us to compute various thermodynamic quantities of the isotropic Heisenberg ferromagnets with the general spin magnitude S. For the dilute case, the critical concentration for any S is derived.