Magnetic properties of amorphous metallic alloys containing rare earth impurities

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Abstract
Presents an extension of the theoretical model of Harris et al. (1974) to describe the magnetic properties of DyCo3.4 alloys. The d band is treated in terms of a Hubbard Hamiltonian and the Dy moments, which are coupled with the d band through a local exchange interaction, are subject to a random anisotropy. The Hamiltonian is treated in the mean field approximation. A fit of the magnetization against temperature curve of DyCo3.4 is presented and the magnetization curves of DyNi3.4 and DyFe3.4 are discussed in the light of the same theoretical model.