کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5358925 1388240 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Quantitative relation between the thermionic contrast of metal surfaces and their degree of monocrystallization
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Quantitative relation between the thermionic contrast of metal surfaces and their degree of monocrystallization
چکیده انگلیسی
▶ We calculate effective work functions (ϕ+,ϕe) for ionic and electronic emissions. ▶ All of ϕ+,ϕe and contrast (Δϕ* ≡ ϕ+ − ϕe) agrees well with experimental data. ▶ Δϕ* = 4c δm (1 − δm) for monocrystallization degree (δm) of 0.5-1. ▶ For W, Δϕ* = c = 0.53 ± 0.09 eV for δm ≲ 0.5, agreeing with experimental data. ▶ Our theoretical model gives a clue to clarify the peculiarity of work function.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 257, Issue 9, 15 February 2011, Pages 4344-4349
نویسندگان
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