| Autor: |
Rudolf Rüffer, Ralf Röhlsberger, Katharina Theis-Bröhl, Hartmut Zabel, Th. Diederich, S. Couet, K Zhernenkov, Kai Schlage, Boris P. Toperverg |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
New journal of physics 11(1), 013038 (2009). doi:10.1088/1367-2630/11/1/013038 |
| ISSN: |
1367-2630 |
| Popis: |
We have studied the magnetic structure that forms in a Fe/native Fe oxide multilayer by nuclear resonant scattering of synchrotron radiationand polarized neutron reflectometry. Magnetic field-dependent experiments revealed a non-collinear magnetic arrangement of the adjacent metallic layers which is mediated by an antiferromagnetically ordered oxide layer. Despite its antiferromagnetic (AFM) order, the oxide exhibits a small net magnetization attributed to the presence of metallic Fe within the AFM matrix that aligns parallel to the external field. The presence of a strong uniaxial anisotropy prevents the system from forming small magnetic domains in remanence. The canting angle between the two magnetic sublattices remains close to 90$\circ$ throughout the magnetization reversal on the hard axis. The results and the influence of the uniaxial anisotropy are discussed in the framework of the proximity magnetism model. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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