SOFT-X-RAY MEASUREMENTS OF THE ELECTRONIC STATES OF VARIOUS MG-IN PHASES

Our present paper deals with the experiments on various phases of Mg-I n (40%) alloy as measured by soft,X-ray emission spectroscopy (SXES). Only the Mg L-2,L-3-line was measured due to the low intensity of the Indium lines. The composition was chosen as it could form various crys tal structures without any change in overall composition. The changes in the soft X-ray spectra (which monitor the s+d partial density of el ectronic states) were compared with the phases present and certain fea tures of the spectra are identified with the presence of particular cr ystal structures. A distinct linear dependence was observed between th e average electronic energy and the bandwidth at half maximum (BWHM) w hich is related to the heat treatment. We concluded that the stability of these phases has a different mechanism than the electronic stabili sation we have found in the metastable states in dilute alloys. The ef fects of alloying on the L-1-L-2,L-3 radiative transition were analyse d and increased intensity was recorded, especially when the alloy was close to its equilibrium structure. (C) 1997 Elsevier Science S.A.