Neel Temperature for Quasi-Two-Dimensional Dipolar Antiferromagnets
arXiv:cond-mat/9310049 · doi:10.1103/PhysRevB.49.413
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.
12 pages, REVTEX, TUM-CP-93-02