We present L2 and L3 x-ray absorption spectroscopy measurements on all of the 5d transition-metal (T) elements and selected TAl2 intermetallic compounds. For the 5d elements we discuss the general trends in the strength of the near-edge "white-line" (WL) feature, the manifestations of the spin-orbit effects, and the dearth of WL strength for Pt and Au. The changes in the intensity of the L-edge WL's in the intermetallic compounds TAl2 (T=Au and Pt) are discussed in terms of strong T-Al chemical bonding. Interestingly, our results for this bonding in AuAl2 are in good agreement with the arguments presented by Pauling.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics