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Neel Temperature for Quasi-Two-Dimensional Dipolar Antiferromagnets

C. Pich·F. Schwabl
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Abstract

We calculate the Néel temperature $T_N$ 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 $T_N$ for K$_2$MnF$_4$, Rb$_2$MnF$_4$, Rb$_2$MnCl$_4$ and (CH$_3$NH$_3$)$_2$MnCl$_4$ are in good agreement with the measured values.

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C. Pich, F. Schwabl. 1993-10-21. Neel Temperature for Quasi-Two-Dimensional Dipolar Antiferromagnets. https://doi.org/10.1103/physrevb.49.413

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