کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10675459 1010673 2005 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Molecular dynamics simulations of low energy ion sputtering of copper nano-dimensional clusters on graphite substrates
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Molecular dynamics simulations of low energy ion sputtering of copper nano-dimensional clusters on graphite substrates
چکیده انگلیسی
Molecular dynamics simulations have been performed of sputtering of copper clusters, which consisted of 13, 39, 75 and 195 Cu atoms, on a (0 0 0 1) graphite surface by 200 eV Ar ions. The role of multiple Ar-Cu and Ar-C interactions in the polar distributions of backscattered Ar ions was investigated. Yields, energy and angular distributions of sputtered cluster atoms were examined. The azimuthal angular distribution of sputtered Cu atoms exhibit periodic maxima every 60°. The polar angular distributions of sputtered Cu atoms have maxima in directions parallel to the substrate surface for all clusters. The obtained sputtering yields are for a surface with a single Cu cluster deposited. A solution to the problem of comparing the sputtering yield for such a single surface cluster with the yield from a surface with a given cluster coverage is presented.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 227, Issue 3, January 2005, Pages 261-270
نویسندگان
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