On the LII, LIIIX ray absorption spectra and the number of d holes in Ni-rich NicCu1-calloys

The authors have calculated the density of states up to 1 Ryd above the Fermi energy, epsilon F , and the L III soft X-ray spectra for a number of Ni c Cu 1-c alloys using the Korringa-Kohn-Rostoker coherent potential approximation (KKR CPA) method. The results reproduce all the prominent features of the experimental absorption spectra in the relevant frequency range. On the basis of the calculations, the authors comment on the variation of the number of d holes on Ni sites within the context of a paramagnetic theory.