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Imaging the antiparallel magnetic alignment of adjacent Fe and MnAs thin films
R. Breitwieser ; M. Marangolo ; J. Luning ; N. Jaouen ; L. Joly ; M. Eddrief ; V. H. Etgens ; M. Sacchi ;
Date:	3 Sep 2008
Abstract:	The magnetic coupling between iron and alpha - MnAs in the epitaxial system Fe/MnAs/GaAs(001) has been studied at the sub-micron scale, using element selective x-ray photoemission electron microscopy. At room temperature, MnAs layers display ridges and grooves, alternating alpha (magnetic) and beta (non-magnetic) phases. The self-organised microstructure of MnAs and the stray fields that it generates govern the local alignment between the Fe and alpha - MnAs magnetization directions, which is mostly antiparallel with a marked dependence upon the magnetic domain size.
Source:	arXiv, 0809.0620
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