کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10644552 | 999625 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of wetting and misfit strain on the pattern formation of heteroepitaxially grown thin films
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک محاسباتی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We investigate surface patterns of heteroepitaxially grown thin films using a three-dimensional kinetic Monte Carlo algorithm. Both the effects of elastic strain and wetting energy are taken into account. For the calculation of elastic strain energy induced by the lattice mismatch between the film and the substrate, a lattice discrete Green's function method is used and numerically evaluated. For the wetting effect, different function forms of wetting energy have been proposed to model the wetting intensity between thin film and the substrate materials. The effects of wetting and misfit strain together with other growth conditions such as deposition rate and temperature of the substrate are thus investigated. Three growth modes, i.e., Layer-By-Layer, Stranski-Krastanow (S-K), and Volmer-Weber (V-W) of thin films are demonstrated clearly in our investigations. The occurrence of S-K growth mode is affected by the competition between the wetting effect and the strain effect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 44, Issue 1, November 2008, Pages 174-179
Journal: Computational Materials Science - Volume 44, Issue 1, November 2008, Pages 174-179
نویسندگان
J.Y. Guo, Y.W. Zhang, C. Lu,