Detecting gas molecules via atomic magnetization
- Authors
- Choi, Heechae; Lee, Minho; Kim, Seungchul; Lee, Kwang-Ryeol; Chung, Yong-Chae
- Issue Date
- Sep-2014
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- DALTON TRANSACTIONS, v.43, no.34, pp.13070 - 13075
- Indexed
- SCIE
SCOPUS
- Journal Title
- DALTON TRANSACTIONS
- Volume
- 43
- Number
- 34
- Start Page
- 13070
- End Page
- 13075
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/159252
- DOI
- 10.1039/c4dt01401d
- ISSN
- 1477-9226
- Abstract
- Adsorptions of gas molecules were found to alter the directions and magnitudes of magnetic moments of transition metal (Co, Fe) atoms adsorbed on graphene. Using first-principles calculations, we demonstrated that magnetism of surface atoms can be used to identify the kind of existing gas molecules via spin-reorientation and/or demagnetizations caused by the reconfigurations of 3d electron energy levels of Co and Fe. We suggest for the first time that magnetic properties of transition metal-embedded nanostructures can be used in highly selective gas-sensing applications.
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