کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5362382 | 1388284 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Diffusions of small clusters on Pt(1Â 1Â 1) and Cu(1Â 1Â 1) surfaces
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Diffusions of small clusters on Pt(1Â 1Â 1) and Cu(1Â 1Â 1) surfaces Diffusions of small clusters on Pt(1Â 1Â 1) and Cu(1Â 1Â 1) surfaces](/preview/png/5362382.png)
چکیده انگلیسی
Diffusions of small cluster Pt6 on Pt(1Â 1Â 1) surface and Cu6 on Cu(1Â 1Â 1) are studied by molecular dynamics simulation, respectively. The atomic interaction is modeled by the semiempirical potential. The results show that the diffusion processes in the two systems are far different. For example, on Pt(1Â 1Â 1) surface, the hopping of single atom and the shearing of two atoms of hexamer only occur on the adatom(s) adsorbed at B-step, while on Cu(1Â 1Â 1) surface they can appear on the adatom(s) either at A-step or B-step. To the concerted translation of the parallelogram hexamer, the anisotropy in the diffusion path is observed in the two systems, the mechanisms and then the preferential paths, however, are completely different. The reasons for these diffusion characteristics and differences are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 254, Issue 18, 15 July 2008, Pages 5822-5826
Journal: Applied Surface Science - Volume 254, Issue 18, 15 July 2008, Pages 5822-5826
نویسندگان
Jianxing Jiang, Peng Zhang, Yiqun Xie, Xijing Ning, Min Zhuang, Yufen Li, Jun Zhuang,