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26 April 2024

» pubmed » pmid11955216

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Coarsening of antiferromagnetic domains in multilayers: the key role of magnetocrystalline anisotropy
D L Nagy ; L Bottyán ; B Croonenborghs ; L Deák ; B Degroote ; J Dekoster ; H J Lauter ; V Lauter-Pasyuk ; O Leupold ; M Major ; J Meersschaut ; O Nikonov ; A Petrenko ; R Rüffer ; H Spiering ; E Szilágyi ;
Date:	15 Apr 2002
Journal:	Phys Rev Lett, 88 (15), 157202
Abstract:	The domain structure of an antiferromagnetic superlattice is studied. Synchrotron Mössbauer and polarized neutron reflectometric maps show micrometer-size primary domain formation as the external field decreases from saturation to remanence. A secondary domain state consisting mainly of at least 1 order of magnitude larger domains is created when a small field along the layer magnetizations induces a bulk-spin-flop transition. The domain-size distribution is reproducibly dependent on the magnetic prehistory. The condition for domain coarsening is shown to be the equilibrium of the external field energy with the anisotropy energy.
Source:	PubMed, pmid11955216
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