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The influence of interfacial roughness on the coherence of structure and magnetic coupling across barriers in Fe/MgO multilayers.

Abstract:

Single-crystal Fe/MgO multilayers are model systems in which to study magnetic tunnel junctions. We find that the interfacial roughness leads to the loss of coherence of the crystal structure. For thick MgO layers ferromagnetic (FM) ordering is found using polarized neutron reflectivity (PNR). For thin MgO layers magnetization measurements reveal the presence of antiferromagnetic (AF) interactions, but no long-range AF order is found using PNR. After cycling in a hysteresis loop, FM correlati...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Condensed Matter Physics
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Journal:
Journal of physics. Condensed matter : an Institute of Physics journal
Volume:
22
Issue:
22
Pages:
226004
Publication date:
2010-06-05
DOI:
EISSN:
1361-648X
ISSN:
0953-8984
URN:
uuid:42a6eb12-61c7-4a9c-94ef-8e9c59a37a5c
Source identifiers:
219836
Local pid:
pubs:219836
Language:
English

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