Calculation of the spin‐disorder resistivity in disordered magnetic alloys

Abstract The CPA‐conductivity theory is applied to the s–d exchange model to calculate the spin contribution to the electrical resistivity of disordered binary alloys containing two kinds of localized spins. The second‐order resistivity is expressed in terms of alloy magnetization, spin‐pair correlation functions, atomic spin difference, and mean spin value. Striking deviations from a Nordheim‐like behaviour of the spin‐disorder residual resistivity are obtained, if the magnitude of the atomic spins depends on alloy composition and local environment.