2015年8月
Sb-Te alloy nanostructures produced on a graphite surface by a simple annealing process
APPLIED SURFACE SCIENCE
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- 巻
- 346
- 号
- 開始ページ
- 366
- 終了ページ
- 371
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.apsusc.2015.03.199
- 出版者・発行元
- ELSEVIER SCIENCE BV
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 degrees 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. (C) 2015 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.apsusc.2015.03.199
- ISSN : 0169-4332
- eISSN : 1873-5584
- ORCIDのPut Code : 45753648
- Web of Science ID : WOS:000355017000049