Metallic Alloys and Exchange-Enhanced Paramagnetism. Application to Rare-Earth—Cobalt Alloys

A phenomenological theory is presented of the magnetic properties of two-component alloys, one of whose components has a permanent magnetic moment, and the other an exchange-enhanced paramagnetic susceptibility. The paramagnetic susceptibility, magnetic-ordering temperature, and magnetization at low temperature are discussed in terms of this theory, and the results obtained are applied to cubic alloys $A{\mathrm{Co}}_2$ between rare earth ($A$) and cobalt.