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Study of high-temperature oxidation of ultrathin fe films on Pt(100) by using X-ray photoelectron spectroscopy

Authors
Nahm, Tschang Uh
Issue Date
May-2016
Publisher
KOREAN PHYSICAL SOC
Keywords
Iron oxide; Iron; Platinum; Oxidation; X-ray photoelectron spectroscopy
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.68, pp.1215 - 1220
Indexed
SCIE
SCOPUS
KCI
Journal Title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
Volume
68
Start Page
1215
End Page
1220
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/154688
DOI
10.3938/jkps.68.1215
ISSN
0374-4884
Abstract
High-temperature oxidation of iron thin films deposited on Pt(100) surfaces was studied by using X-ray photoelectron spectroscopy (XPS). Upon an oxygen exposure of 300 Langmuir onto a 7.5- monolayer (ML) Fe film at 830 K, about 2 monolayers of the Fe film were oxidized as Fe3O4 while the remaining Fe atoms diffused into the substrate. For 1.25-, 2.5-, and 3.75-monolayer Fe films, only about a monolayer of the Fe film was oxidized as FeO, regardless of the number of Fe atoms. The oxide layers on the 7.5-monolayer Fe film were observed to be stable upon post-annealing at 1030 K.
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