SPIN-POLARIZED RELATIVISTIC ELECTRONIC-STRUCTURE CALCULATIONS FOR DISORDERED ALLOYS USING THE CPA - APPLICATION TO FEXCO1-X AND COXPT1-X

The Coherent Potential Approximation (CPA) approach to deal with disordered alloys has been combined with the spin-polarized version of relativistic multiple scattering theory (SPRKKR-CPA). This formalism allows to calculate the electronic structure of magnetic alloys treating all relativistic effects in a rigorous manner. By this way one gets access to a number of interesting spin-orbit induced properties as for example: orbital contributions to the magnetic moments and the hyperfine fields, magnetic X-ray dichroism or magneto-resistivity. First results are presented for the systems FexCo1-x and CoxPt1-x together with a comparison to experimental data.