This title appears in the Scientific Report :
2007
Please use the identifier:
http://dx.doi.org/10.1063/1.2747539 in citations.
Please use the identifier: http://hdl.handle.net/2128/17148 in citations.
Magnetization reversal via symmetric rotation of layers in exchange biased multilayers
Magnetization reversal via symmetric rotation of layers in exchange biased multilayers
We have investigated the magnetization reversal for exchange coupled polycrystalline [IrMn/CoFe](N) multilayers. Polarized neutron reflectivity (PNR) data indicate a simultaneous coherent rotation of all ferromagnetic layers for a sample with N=10 and angles of 45 degrees and 90 degrees between the...
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Personal Name(s): | Paul, A. |
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Buchmeier, M. / Schneider, C. M. / Brückel, T. | |
Contributing Institute: |
Streumethoden; IFF-4 JARA-FIT; JARA-FIT Elektronische Eigenschaften; IFF-9 |
Published in: | Journal of applied physics, 101 (2007) S. 123913-1 - 123913-10 |
Imprint: |
Melville, NY
American Institute of Physics
2007
|
Physical Description: |
123913-1 - 123913-10 |
DOI: |
10.1063/1.2747539 |
Document Type: |
Journal Article |
Research Program: |
Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) Kondensierte Materie |
Series Title: |
Journal of Applied Physics
101 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/17148 in citations.
We have investigated the magnetization reversal for exchange coupled polycrystalline [IrMn/CoFe](N) multilayers. Polarized neutron reflectivity (PNR) data indicate a simultaneous coherent rotation of all ferromagnetic layers for a sample with N=10 and angles of 45 degrees and 90 degrees between the applied field and the exchange bias direction. On the other hand, magneto-optic Kerr effect (MOKE) measurements, which are sensitive mainly to the two topmost bilayers, reveal a variation of the strength of the exchange bias and the uniaxial anisotropy as a function of N for multilayers with N=1 up to 10. The MOKE data thus indicate the direction of the magnetization to vary from layer to layer for intermediate fields. PNR was found to be insensitive to this variation as the deviation of the layer magnetization directions from its mean value is relatively small (approximate to 10 degrees). These studies demonstrate how the complementary techniques PNR and MOKE can be used to obtain a layer-by-layer vector magnetometry of multilayer stacks.(c) 2007 American Institute of Physics. |