This title appears in the Scientific Report :
2006
Please use the identifier:
http://hdl.handle.net/2128/1176 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.73.174408 in citations.
Exchange-bias instability in a bi-layer with an ion beam imprinted stripe pattern of ferromagnetic/antiferromagnetic interfaces
Exchange-bias instability in a bi-layer with an ion beam imprinted stripe pattern of ferromagnetic/antiferromagnetic interfaces
We have investigated the magnetization arrangement in an in-plane stripe pattern with alternating exchange-bias domains. The stripe pattern was produced by ion bombardment induced magnetic patterning, which changed locally the exchange-bias direction at the ferromagnet/antiferromagnet interface, but...
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Personal Name(s): | Theis-Bröhl, K. |
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Wolff, M. / Westphalen, A. / Zabel, H. / McCord, J. / Höink, V. / Schmalhorst, J. / Reiss, G. / Weis, T. / Engel, D. / Ehresmann, A. / Rücker, U. / Toperverg, B. | |
Contributing Institute: |
Streumethoden; IFF-ISM |
Published in: | Physical Review B Physical review / B, 73 73 (2006 2006) 17 17, S. 174408 174408 |
Imprint: |
College Park, Md.
APS
2006
|
Physical Description: |
174408-1 - 174408-14 |
DOI: |
10.1103/PhysRevB.73.174408 |
Document Type: |
Journal Article |
Research Program: |
Großgeräte für die Forschung mit Photonen, Neutronen und Ionen (PNI) Kondensierte Materie |
Series Title: |
Physical Review B
73 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1103/PhysRevB.73.174408 in citations.
We have investigated the magnetization arrangement in an in-plane stripe pattern with alternating exchange-bias domains. The stripe pattern was produced by ion bombardment induced magnetic patterning, which changed locally the exchange-bias direction at the ferromagnet/antiferromagnet interface, but not the magnetic or antiferromagnetic properties of the Co70Fe30 and Mn83Ir17 layers, respectively. For the analysis of the magnetic domain structure evolution along the hysteresis loop we used a combination of experimental techniques: magneto-optical Kerr effect, Kerr microscopy, polarized neutron reflectometry, and off-specular scattering of polarized neutrons with polarization analysis. Instead of a perfect antiparallel alignment we found that the magnetization in neighboring stripes is periodically canted with respect to the stripe axis so that the net magnetization of the ferromagnetic film turns almost perpendicular to the stripes. At the same time the projection of the magnetization vector onto the stripe axis has a periodically alternating sign. The experimental observations are explained and quantitatively described within the frame of a phenomenological model, taking into account interfacial exchange bias, intralayer exchange energy, and uniaxial anisotropy. The model defines conditions which can be used for tailoring nano- and micro-patterned exchange-bias systems with different types of magnetic order. |