FERROMAGNETISM IN FECU METASTABLE ALLOYS

We present linearized augmented-plane-wave calculations for FeCu fcc a nd bcc metastable phases using the local-density approximation (LDA) a s well as the local-spin-density approximation (LSDA). The nonpolarize d density of states calculated within the framework of LDA together wi th the reformulated Stoner theory provide results in excellent agreeme nt with those obtained from LSDA calculations. The magnetization is ca lculated for several alloy compositions-the magnetic moment per Fe ato m is almost constant over a wide range of Fe content-in good agreement with recent experiments.