Abstract
A Heisenberg model is solved within the spin-wave theory for thin films in which ferromagnetic monolayers are separated by nonmagnetic spacer layers. The interface interaction is assumed to be ferromagnetic. We have included also a magnetic anisotropy in each monolayer. The temperature dependence of the spin-wave contribution to the heat capacity C m in such composite systems is derived for several sets of material parameters and for different film thicknesses.
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