On the magnetic susceptibilities in disordered alloys. II. Multi orbital case, spin wave stiffness constant

Abstract

For pt.I see abstr. A.64186 of 1974. The 'noninteracting' and 'interacting' dynamical susceptibilities of ferromagnetic substitution disordered binary alloys treated within the CPA-HF approximation are derived, in the single and multi orbital cases. The spin wave stiffness constant D and the magnetic moments on the alloy components, are computed as a function of the concentrations, for a model simple cubic tight binding s band and for a multiple orbital Ni-Fe alloy, using a realistic band shape for Ni. The results are in good agreement with experiment.