کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5367773 | 1388372 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced growth of low-resistivity cobalt silicide by using a Co/Au/Co trilayer film on Si0.8Ge0.2 virtual substrate
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Formation of Co germanosilicides on Si0.8Ge0.2 virtual substrates with a Co/Au/Co sandwich thin film after different heat treatments has been investigated. The sequence of phase formation is the same as the reaction of blanket Co thin film with (001)Si. The presence of thin interposing Au layers was found to significantly enhance the formation of low-resistivity CoSi2 on (001)Si0.8Ge0.2 substrates. The formation temperature of CoSi2 phase in the Co/Au/Co/(001)Si0.8Ge0.2 samples was lowered by about 200 °C compared to that of Co/(001)Si0.8Ge0.2 samples. From TEM and EDS analysis, some of Au atoms were found to diffuse from the original interface position to disperse within the CoSi2 layers during silicidation reactions. The mechanisms for the enhanced formation of CoSi2 in the Co/Au/Co/Si0.8Ge0.2 system were explained in the context of classical nucleation theory.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 254, Issue 19, 30 July 2008, Pages 6211-6214
Journal: Applied Surface Science - Volume 254, Issue 19, 30 July 2008, Pages 6211-6214
نویسندگان
S.L. Cheng, H.Y. Chen, S.W. Lee,