Imaging the antiparallel magnetic alignment of adjacent Fe and MnAs thin films

Details Imaging the antiparallel magnetic alignment of adjacent Fe and MnAs thin films Imaging the antiparallel magnetic alignment of adjacent Fe and MnAs thin films

2008-09-03

arxiv.org/abs/0809.0620v1

Appl. Phys. Lett. 93, 122508 (2008)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.2990755

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.

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