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Investigations for the Existence of an iron-Oxide Layer at the MgO/Fe Interface

Authors
김태영노기정이한길김재영박재훈
Issue Date
Aug-2008
Publisher
The Korean Physical Society
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.53, no.2, pp.1079 - 1083
Journal Title
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
Volume
53
Number
2
Start Page
1079
End Page
1083
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/148181
DOI
10.3938/jkps.53.1079
ISSN
0374-4884
Abstract
We have investigated the possibility of an interface between MgO and Fe films to explore the existence of an oxide layer at the MgO/Fe interface as a preliminary system of Fe/MgO/Fe magnetic tunnel junctions. By using photoemission spectroscopy and X-ray absorption spectroscopy, we found that no iron-oxide layer existed at the interface for the {it in-situ}-grown epitaxial MgO(001)/Fe(001) bilayer on a W(001) substrate. Moreover, we showed that metal Mg could revivify the iron-oxide to metal Fe when MgO was formed. These results show we can make iron-oxide-free samples in the Mg-rich growth condition.
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