Nearest surroundings of aluminum atoms and features of the electron structure of Al90FexCe10-x alloys (x=3, 5, 7)

The spectra of x-ray absorption near-edge structure (XANES) were measured a t the K-edge of aluminum in Al90FexCe10 - x alloys (x = 3, 5, 7). A theoret ical XANES analysis at the Al K-edge was performed for Al90Fe5Ce5 by using the multiple scattering algorithm. A comparison of the experimental and the oretical results allowed establishment of the most probable model of local surroundings of aluminum atoms in the alloy system studied. The density of free Al and Fe electron states in the conduction band was determined. It wa s found that the interaction between Al p states and Fe d states leads to p ushing of the former states by the latter ones. (C) 2001 MAIK "Nauka/Interp eriodica".