KKR CPA CALCULATIONS OF DENSITY-OF-STATES AND SOFT-X-RAY EMISSION FROM DISORDERED LI-MG ALLOYS

The density of states (DOS) and soft X-ray spectra from disordered Li1 -xMgx alloys have been calculated by using the charge self-consistent KKR-CPA method. We find that the DOS at the Fermi energy (E(F)) shows an interesting behaviour as a function of x; it first increases in the range x = 0.0-0.14; then shows a flat behaviour in the range x congru ent-to 0.14-0.20 and finally decreases smoothly from x = 0.20-0.60. We show that this behaviour of the DOS is related to the development of a neck in the Fermi surface and its smearing due to disorder scatterin g. Theoretical results for the soft X-ray emission spectra are compare d with experimental results and are found to be in good accord.