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Investigations for the Existence of an iron-Oxide Layer at the MgO/Fe Interface
- Authors
- Khim, T.-Y.; Rho, K.-J.; Lee, Hangil; Kim, J.-Y.; Park, J.-H.
- Issue Date
- Aug-2008
- Publisher
- The Korean Physical Society
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.53, no.2, pp 1079 - 1083
- Pages
- 5
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 53
- Number
- 2
- Start Page
- 1079
- End Page
- 1083
- ISSN
- 0374-4884
1976-8524
- 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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