کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5425861 | 1395868 | 2007 | 11 صفحه PDF | دانلود رایگان |

Scanned-energy mode photoelectron diffraction (PhD), using the O 1s and V 2p photoemission signals, together with multiple-scattering simulations, have been used to investigate the structure of the V2O3(0Â 0Â 0Â 1) surface. The results support a strongly-relaxed half-metal termination of the bulk, similar to that found in earlier studies of Al2O3(0Â 0Â 0Â 1) and Cr2O3(0Â 0Â 0Â 1) surfaces based on low energy electron and surface X-ray diffraction methods. However, the PhD investigation fails to provide definitive evidence for the presence or absence of surface vanadyl (VO) species associated with atop O atoms on the surface layer of V atoms. Specifically, the best-fit structure does not include these vanadyl species, although an alternative model with similar relaxations but including vanadyl O atoms yields a reliability-factor within the variance of that of the best-fit structure.
Journal: Surface Science - Volume 601, Issue 16, 15 August 2007, Pages 3350-3360