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EnglishWe have investigated the magnetic properties of epitaxially grown Fe/NiO/Fe(0 0 1) trilayers, for different thicknesses of the NiO spacer. Magneto Optical Kerr Effect has been exploited to study the in-plane magnetization reversal processes in the iron layers. We found that the NiO thickness tAFM has a critical value tC for the magnetic coupling between the Fe layers: for tAFM<tC the magnetization directions align perpendicularly, with zero applied field, while the alignment is collinear for thicker spacers. A phenomenological model has been developed to reproduce and discuss the results. Complementary information has been obtained by means of spin polarized low energy electron microscopy.
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| Data di pubblicazione: | 2005 | |
| Titolo: | Magnetic properties of Fe/NiO/Fe(001) trilayers | |
| Autori: | P. BIAGIONI; A. BRAMBILLA; M. PORTALUPI; N. ROUGEMAILLE; A. K. SCHMID; A. LANZARA; VAVASSORI P.; M. ZANI; M. FINAZZI; L. DUO; F. CICCACCI | |
| Rivista: | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | |
| Abstract: | We have investigated the magnetic properties of epitaxially grown Fe/NiO/Fe(0 0 1) trilayers, for different thicknesses of the NiO spacer. Magneto Optical Kerr Effect has been exploited to study the in-plane magnetization reversal processes in the iron layers. We found that the NiO thickness tAFM has a critical value tC for the magnetic coupling between the Fe layers: for tAFM<tC the magnetization directions align perpendicularly, with zero applied field, while the alignment is collinear for thicker spacers. A phenomenological model has been developed to reproduce and discuss the results. Complementary information has been obtained by means of spin polarized low energy electron microscopy. | |
| Digital Object Identifier (DOI): | 10.1016/j.jmmm.2004.11.170 | |
| Handle: | http://hdl.handle.net/11392/1211074 | |
| Appare nelle tipologie: | 03.1 Articolo su rivista |
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