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Top-down approach using supercritical carbon dioxide ball milling for producing sub-10 nm Bi_2 Te_3 grains
- 資料種別:
- 論文(リポジトリ)
- 責任表示:
- Atwa, Mohamed ; Nakagawa, Tessui ; Yonamine, Akira ; Lloyd, David C. ; Schreiber, Makoto ; Miyazaki, Koji ; Takeuchi, Tsunehiro ; Okada, Yoshinori
- 言語:
- 英語
- 出版情報:
- Japan Society of Applied Physics — 公益社団法人応用物理学会, 2020-05-20
- 著者名:
Atwa, Mohamed Nakagawa, Tessui Yonamine, Akira Lloyd, David C. Schreiber, Makoto Miyazaki, Koji Takeuchi, Tsunehiro Okada, Yoshinori - 掲載情報:
- Applied Physics Express
- ISSN:
- 1882-0778
1882-0786 - 巻:
- 13
- 通号:
- 067002-1
- 開始ページ:
- 067002-5
- バージョン:
- VoR
- 概要:
- We compare Bi_2Te_3 powders prepared by conventional ball milling to powders milled in supercritical carbon dioxide (scCO_2). We demonstrate that scCO_2 milling overcomes size-reduction limitations reported for conventional milling. XRD and
…
TEM reveal nanograins with smaller average sizes (< 10 nm) and narrower grain size distributions in the scCO_2 milled case. scCO_2 milling also preserves the crystallinity and shows less oxidation than conventional milling. This is the first report of Bi_2Te_3 with a sub-10 nm grain size whilst conserving high quality crystallinity, made using a top-down approach. Our study offers a route for developing unprecedentedly fine bulk nanostructured Bi_2Te_3-based thermoelectric materials.
論文 続きを見る - URL:
- http://hdl.handle.net/20.500.12000/47206