Study of the electronic structure of Au–V bimetallics using X-ray photoelectron spectroscopy (XPS) and X-ray absorption near-edge structure (XANES)

摘要: Abstract Core-level binding energy shifts and valence band behaviour for Au–V intermetallic compounds have been studied with X-ray photoelectron spectroscopy (XPS) absorption near-edge structure (XANES). It is found that both the Au 4f V 2p core levels exhibit a positive shift, relative to pure metals. These results can be explained charge compensation model (Watson et al., Phys. Rev. B4 (1971) 4139): there an increase in number of sp-like conduction electrons accompanied by decrease d-electron count at site resulting small net flow onto accord electronegativity electroneutrality considerations. L-edge structures (XANES) provide direct evidence d-charge depletion gold confirming XPS results. K-edge XANES indicate site, as well. are compared those Au–Ti Au–Ta alloys.