کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9566833 1503707 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanocrystals formation and fractal microstructural assessment in Au/Ge bilayer films upon annealing
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Nanocrystals formation and fractal microstructural assessment in Au/Ge bilayer films upon annealing
چکیده انگلیسی
Nanocrystals formation and fractal microstructural assessment in Au/Ge bilayer films upon annealing have been investigated by transmission electron microscopy and high-resolution transmission electron microscopy observations. Experimental results indicated that the microstructure of the metal Au film plays an important role in metal-induced crystallization for Au/Ge bilayer films upon annealing. Synchronously, the crystallization processes of amorphous Ge accompanied by the formation of Ge fractal clusters, which were composed of Ge nanocrystals. We found that the grain boundaries of polycrystalline Au film were the initial nucleation sites of Ge nanocrystals. High-resolution transmission electron microscopy observations showed successive nucleation of amorphous Ge at Au grain boundaries near fractal tips. The crystallization process was suggested to be diffusion controlled and a random successive nucleation and growth mechanism.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 250, Issues 1–4, 31 August 2005, Pages 3-8
نویسندگان
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