Magnetic properties of crystallineand amorphous alloys: A systematic discussion based on the Rhodes-Wohlfarth plot

Over a hundred magnetic materials are analyzed on the basis of the Rhodes-Wohlfarth plot which gives the ration qc/qs of the magnetic moments from susceptibility and low temperature measurements as a function of the Curie temperature Tc. For those materials with Tc⪅500 K the existence of two branches of this plot helps to distinguish an itenerant from a localized approach. Independent evidence as to the appropriateness of the relevant approach is briefly discussed for many of the materials listed and is suggested as a relevant for others.