TI L-SPECTRUM XANES AND ELECTRON-STRUCTURE OF THE SYSTEM TI-AL-C

The electron structure and Ti L -absorption edge in the system Ti-ALC have been studied theoretically using the local coherent potential met hod of the multiple scattering theory. The calculated local partial el ectron density of states of Ti made it possible to study the influence of Al on the electron structure of this material and its Ti L-absorpt ion spectrum. It was shown that in the ternary system comparing with t he binary titanium carbide the first maximum of the titanium unoccupie d d-states nearly disappeared and the intensity of the second one fell more than twice. These calculations are in a good correspondence with the experimental Ti L-spectra and indicate that the contribution of T i s-states to XANES can be neglected.