THE ELECTRON-DENSITY AND SPIN MAGNETIC-MOMENT OF RELATIVISTIC COLLINEAR FERROMAGNETS

An effective technique for computation of the electron density and spi n magnetic moment in a ferromagnet, based on the relativistic Korringa -Kohn-Rostoker method, is developed and realized. The calculation form ulae are derived using the Hellmann-Feynman theorem and perturbation t heory for matrices. The influence of spin-orbit interaction on the for mation of the electron spectrum as well as the problem of compatibilit y of electron states are discussed. The electron density and spin mome nt distributions and s-, p-, d-type contributions to them are analysed .