کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5354845 | 1503618 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sb-Te alloy nanostructures produced on a graphite surface by a simple annealing process
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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: Sb-Te alloy nanostructures produced on a graphite surface by a simple annealing process Sb-Te alloy nanostructures produced on a graphite surface by a simple annealing process](/preview/png/5354845.png)
چکیده انگلیسی
We have produced Sb-Te alloy nanostructures from a thin Sb2Te3 layer deposited on a highly oriented pyrolytic graphite substrate using a simple rf-magnetron sputtering and annealing technique. The size, shape, and chemical composition of the structures were investigated by scanning electron microscopy (SEM), atomic force microscopy (AFM), and energy dispersive X-ray spectrometry (EDX), respectively. The shape of the nanostructures was found to depend on the annealing temperature; nanoparticles appear on the substrate by annealing at 200 °C, while nanoneedles are formed at higher temperatures. Chemical composition analysis has revealed that all the structures were in the composition of Sb:Te = 1:3, Te rich compared to the target composition Sb2Te3, probably due to the higher movability of Te atoms on the substrate compared with Sb. We also tried to observe the production process of nanostructures in situ using SEM. Unfortunately, this was not possible because of evaporation in vacuum, suggesting that the formation of nanostructures is highly sensitive to the ambient pressure.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 346, 15 August 2015, Pages 366-371
Journal: Applied Surface Science - Volume 346, 15 August 2015, Pages 366-371
نویسندگان
Masashi Kuwahara, Hideaki Uratsuji, Maho Abe, Hayato Sone, Sumio Hosaka, Joe Sakai, Yoichi Uehara, Rie Endo, Tohru Tsuruoka,