A Statistical Model for the Dilute Ferromagnet
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概要
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A statistical model for a kind of dilute ferromagnetism is presented. In this model, a sublattice is a mixture of magnetic ions and non-magnetic ions, and the other sublattice is occupied exclusively by magnetic ions. Assuming the Ising type exchange interaction between magnetic ions, some exact results for the system are obtained. The Curie temperature decreases as the concentration of magnetic ions decreases and reaches the absolute zero of temperature at a critical concentration. At concentrations higher than the critical value, the specific heat remains finite and has a cusp with vertical tangent at the Curie temperature. The critical concentrations for several types of lattices are also given.
- 理論物理学刊行会の論文
- 1966-12-25
著者
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Syozi Itiro
Department Of Applied Physics Faculty Of Engineering Osaka University
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Miyazima Sasuke
Department Of Applied Physics Chubu University
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