The study of surface segregation of Re(3)Pt polycrystalline alloy with photoelectron spectroscopy.
The surface segregation and electronic structure of Re(3)Pt polycrystalline alloy were investigated via x-ray photoelectron spectroscopy (XPS). The results from angle-resolved core-level XPS show the enrichment of Pt at the top surface layer upon annealing at T=1200 K. The experimental results show excellent agreement with a theoretical model calculation, providing the element-specific depth profiles upon the high temperature annealing process. The presence of strong electron hybridization between Re and Pt is evident in the valence-band density-of-states ultraviolet photoemission spectra.
Mun
Bongjin S
BS
Department of Applied Physics, Hanyang University, Ansan, Gyeonggi 426-791, Republic of Korea. bsmun@hanyang.ac.kr
Rossi
Massimiliano
M
Ross
Philip N
PN