Abstract
We have studied the effect of quantum transverse anisotropies on the multilayer transition and magnetic properties of a spin-3/2 Blume–Capel model of a system formed by two magnetic multilayer materials, of different thicknesses, separated by a nonmagnetic spacer of thickness and RKKY interaction. Using mean-field theory, it is found that the multilayer magnetic order–disorder transition temperature depends strongly on the value of the transverse anisotropy. The multilayer transition temperature decreases when increasing the transverse anisotropy. Furthermore, there exists a critical quantum transverse anisotropy Δ xL beyond which the separate transitions occur in the two magnetic layers. The critical transverse anisotropy Δ xL increases on increasing the magnetic crystal field and/or the thickness of the magnetic multilayers N. On other hand, the Δ xL decreases on increasing the Fermi level and/or the nonmagnetic thickness M.
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