Magnetization of Cubic Ferromagnets and the Three-Component Potts Model

Abstract
The (Hx, Hy, Hz) phase diagram of a cubic ferromagnet with three easy axes, in a field H=(Hx, Hy, Hz), is studied by mean-field, scaling, and renormalization-group theories. For T<Tc(H=0) and H[111] there is a phase transition at fields ±H0(T), described by the three-component Potts model. By varying H the full phase diagram of the three-dimensional Potts model is experimentally accessible and competing predictions of the multicritical behavior can be tested.

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