Abstract

The distinction between the localized and the induced magnetic moment on an atom in a ferromagnetic alloy is discussed on the basis of the itinerant-electron theory in the Hartree-Fock approximation. The results of the theoretical calculation on the effect of the nearest neighbour shell are presented for Fe-V and Ni-Fe alloys. Various types of instability of the Fe magnetic moment in Ni-Fe alloys, which are particularly important in the Invar region, are pointed out.

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