Ion irradiation induced surface composition modulation in equiatomic binary alloys
- Authors
- Kim, Byung-Hyun; Kim, Sang-Pil; Kang, Joonhee; Chung, Yong-Chae; Kim, Kyung-Suk; Lee, Kwang-Ryeol
- Issue Date
- Feb-2021
- Publisher
- ELSEVIER
- Keywords
- Ion irradiation; Ion bombardment; Sputtering; Equiatomic alloys; Molecular dynamics
- Citation
- APPLIED SURFACE SCIENCE, v.540, pp.1 - 7
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 540
- Start Page
- 1
- End Page
- 7
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/1603
- DOI
- 10.1016/j.apsusc.2020.148103
- ISSN
- 0169-4332
- Abstract
- Composition modulation by Ar bombardment on the Co0.5Cu0.5 alloy and the CoAl B2 phase was investigated on atomic scale by molecular dynamics simulation. The Ar bombardment on alloys at 300 K revealed that this bombardment induces a surface composition modulation in the layer-by-layer mode. In both the Co0.5Cu0.5 alloy and the CoAl B2 phase, the element of higher-sputtering yield is accumulated on the top surface layer, whereas it is depleted in lower layers, which is puzzling in the framework the conventional sputtering theory. A phenomenological kinetic model derived from the MD simulation results considering both the rearrangement and the sputtering of the substrate atoms successfully demonstrated that the rearrangement of the substrate atoms plays a significant role in the observed composition modulation.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 신소재공학부 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/1603)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.