Abstract

The spin-wave density of states for Ni thin films is calculated within the framework of the multiband model. Parameters of the model are chosen in such a way that one-electron ground state results consistent with ab initio theories are obtained. The calculated surface density of states is considerably enhanced as compared to the density of states in the central layer. The enhancement is a result of the presence of the acoustic surface spin-wave modes. The temperature dependence of the magnetization is also investigated. It is obtained that the surface magnetization decreases faster than the central layer magnetization. A range of the temperatures in which the magnetization decreases according to a T 3 2 law is found.

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