The Application of CPA to Calculations of the Mean Magnetic Moment in the Gd_1‐x‐,Ni_x, Gd_1‐x ‐,Fe_x, Gd_1‐x ‐,Co_x, and Y_1‐x ‐,Co_x Intermetallic Compounds

Abstract

Abstract Calculations are made of the mean magnetic moment per atom of the transition metal and the rare‐earth metal in the intermetallic compounds, Gd 1‐x ,Ni x , Gd 1‐x Fe x , Gd 1‐x Co x , and Y 1‐x Co x . A simple model of the disordered alloy consisting of spins localized on the rare‐earth atoms and interacting with a narrow d‐band is considered. The magnetic moment of the alloy at zero temperature is calculated within the molecular field and Hartree‐Fock approximations. Disorder is treated in the coherent potential approximation. Results are in good agreement with the experimental data obtained for the crystalline and amorphous intermetallic compounds.