Detecting gas molecules via atomic magnetization

Title
Detecting gas molecules via atomic magnetization
Authors
최희채이민호김승철이광렬정용재
Keywords
Gas sensor; magnetization; Density Functional Theory; ab initio; magnetic anisotropy
Issue Date
2014-09
Publisher
Dalton transactions
Citation
VOL 43, NO 34, 13070-13075
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.
URI
http://pubs.kist.re.kr/handle/201004/47974
ISSN
14779226
Appears in Collections:
KIST Publication > Article
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