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http://www.repositorio.cdtn.br:8080/jspui/handle/123456789/596| Title: | Direct measurement of depth-dependent Fe spin structure during magnetization reversal in Fe/MnF2 exchange-coupled bilayers |
| Title of periodic: | Physical Review B New York |
| metadata.dc.title.subtitlejournal: | Condensed Matter and Materials Physics |
| Authors: | Macedo, Waldemar Augusto de Almeida Sahoo, B. Eisenmenger, J. Martins, Maximiliano Delany Keune, W. Kuncser, V. Roehlsberger, R. Leupold, O. Rueffer, R. Nogués, J. Liu, K. Schlage, K. Schuller, I.K. |
| Affiliation: | Centro de Desenvolvimento da Tecnologia Nuclear/CDTN, Belo Horizonte, MG, Brasil Universitaet Duisburg-Essen, Duisburg, Germany, F.R. Universitaet Ulm, Ulm, Germany, F.R. Centro de Desenvolvimento da Tecnologia Nuclear/CDTN, Belo Horizonte, MG, Brasil Universitaet Duisburg-Essen, Duisburg, Germany, F.R. National Institute of Materials Physics, Bucharest-Magurele, Romania National Institute of Materials Physics, Bucharest-Magurele, Romania European Synchrotron Radiation Facility, Grenoble, France European Synchroton Radiation Facility, Grenoble, France ICREA and University Autònoma de Barcelona, Bellaterra, Spain University of California-Davis, Davis, CA, USA Universitaet Rostock, Rostock, Germany, F.R. University of California, La Jolla, CA, USA |
| Issue Date: | 2008 |
| Keywords: | Iron;spin;rotation;magnetization |
| Abstract: | We measured directly the depth-dependent Fe spin rotation upon magnetization reversal in exchangecoupled Fe/MnF2 bilayers using nuclear resonant scattering of synchrotron radiation from an 57Fe-probe layer buried at different depths within the Fe film. Our results show that the exchange-biased ferromagnetic layer develops a noncollinear spin structure along the film normal direction, reminiscent of a partial domain wall parallel to the Fe/MnF2 interface. This is contrary to most theoretical models of exchange bias which assume a collinear spin structure in the ferromagnetic layer. |
| Access: | L |
| Appears in Collections: | Artigo de periódico |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| Art-03_Waldemar_AAMacedo.pdf | 222.42 kB | Adobe PDF | View/Open |
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