Effective anisotropy and saturation magnetostriction of soft magnetic FeZrB(Cu) amorphous and nanocrystalline alloys

The effective anisotropy field and the saturation magnetostriction constant are presented as a function of the annealing parameters for Fe93-x-yZr7BxCuy (x = 6, 8 and y = 0, 1, 2) samples. The results obtained for these magnetic properties are interpreted in terms of microstructure-magnetization interactions, which lead to an enhancement of the soft magnetic character in the samples. Experimental data on saturation magnetostriction are analysed from the point of view of the surface properties and the magnetostriction constant, which describes the interface between the crystalline grain and the amorphous matrix.