EVALUATION OF THE MAIN CONTRIBUTIONS TO THE RESIDUAL RESISTIVITIES OFFE-NI-BASED METALLIC GLASSES

The residual resistivities of ferromagnetic alloys from the FexNi80-xP 14B6 and FexNi80-xB20 amorphous alloy systems have been explained with in the framework of the two-current model. Assuming that the alloys co ntaining more than 20 at% Fe are strong ferromagnets, it has been foun d that there are two main contributions to their residual resistivitie s. One of them, which is proportional to the electronic specific heat coefficient gamma, we have ascribed to the s-d scattering processes, i .e. the Mott contribution. The Northeim-Gorter behaviour of the second contribution indicates electronic scattering from the disordered pote ntials of binary systems, which is described within the framework of t he Faber-Ziman theory. The alloys that exhibit spin glass behaviour ar e also briefly discussed.