کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1595825 | 1515725 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dimension-induced structural stability transition: The stable and metastable phases of nanowires
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The energy along the epitaxial Bain paths (EBP's) was calculated for [001] oriented rectangular Ag, Cu, Ni nanowires as well as for bulk crystals using the second-nearest-neighbor modified embedded atom method (2NN-MEAM). Interestingly, it seemed that the stable phases (c/a=1) and metastable phases (c/aâ0.6) of bulk crystals exchanged with each other when the wire width was reduced down to about several atom layers. The fct lattice with c/aâ0.6, which cannot exist stably in bulk form, becomes possible in this dimension scale. During the top-down preparation processes, nanowires may transform from the metastable phases to the stable phases spontaneously driven by surface effect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 140, Issues 11â12, December 2006, Pages 487-490
Journal: Solid State Communications - Volume 140, Issues 11â12, December 2006, Pages 487-490
نویسندگان
Fei Ma, Kewei Xu,