Neel Temperature for Quasi-Two-Dimensional Dipolar Antiferromagnets
C. Pich, F. Schwabl
Abstract
We calculate the Néel temperature TN for two-dimensional isotropic dipolar Heisenberg antiferromagnets via linear spin-wave theory and a high temperature expansion, employing the method of Callen. The theoretical predictions for TN for K2MnF4, Rb2MnF4, Rb2MnCl4 and (CH3NH3)2MnCl4 are in good agreement with the measured values.
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