Low temperature magnetic hardness of melt spun Fe-Zr amorphous alloys

Abstract Magnetic measurements have been made on iron-rich amorphous Fe-Zr alloys as a function of composition and temperature. We find no evidence of the spin-glass transition suggested by other workers, all our results being explicable in terms of an exponential increase in magnetic hardness on lowering the temperature. The magnetic hardness increases very rapidly with increasing Fe content. Both these results may be explained on the basis of compositional inhomogeneity resulting in the presence of antiferromagnetic inclusions, the volume fraction of which is assumed to govern the coercivity.