کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5425861 1395868 2007 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The structure of the V2O3(0 0 0 1) surface: A scanned-energy mode photoelectron diffraction study
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
The structure of the V2O3(0 0 0 1) surface: A scanned-energy mode photoelectron diffraction study
چکیده انگلیسی

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(0 0 0 1) surface. The results support a strongly-relaxed half-metal termination of the bulk, similar to that found in earlier studies of Al2O3(0 0 0 1) and Cr2O3(0 0 0 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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 601, Issue 16, 15 August 2007, Pages 3350-3360
نویسندگان
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