Ys. Lee et al., STUDY OF THE L-3 EDGES OF ION-BEAM-MIXED PD-CU ALLOYS BY X-RAY-ABSORPTION SPECTROSCOPY, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 129(3), 1997, pp. 387-391
X-ray absorption spectroscopy (XAS) at the L-3 edge of Pd is used to i
nvestigate the electronic structure of ion-beam-mixed Pd-Cu alloys wit
h a wide composition range (0.1 less than or equal to x less than or e
qual to 0.9). The formation of chemical bonds between Pd and Cu affect
s the occupancy and/or hybridization of the d states, and this change
is revealed in the white line intensities. It is found that, within io
n-beam-mixed Pd-Cu alloys, there is a substantial decrease in the area
of the Pd L-3 white lines upon increasing the Cu concentration. This
result implies that upon alloying with Cu there is a gradual filling o
f the Pd d band. The amount of d-charge transfer at the Pd site of ion
-beam-mixed Pd-Cu alloys has been estimated on the basis of the change
within the white line.