Magnetic correlations in nanostructured ferromagnets

Magnetic correlations in nanostructured ferromagnets

Small-angle neutron scattering experiments on nanostructured Fe, Co, and Ni reveal grain-size dependent magnetic correlations across grain boundaries. In Fe, a minimum of the correlation length is observed for grain sizes of the order of the bulk domain-wall width where the coercive field has a maxi...

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Veröffentlicht in:Physical review letters 2000-08, Vol.85 (9), p.1990-1993
Hauptverfasser: Loffler, JF, Braun, HB, Wagner, W
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container_end_page 1993
container_issue 9
container_start_page 1990
container_title Physical review letters
container_volume 85
creator Loffler, JF
Braun, HB
Wagner, W
description Small-angle neutron scattering experiments on nanostructured Fe, Co, and Ni reveal grain-size dependent magnetic correlations across grain boundaries. In Fe, a minimum of the correlation length is observed for grain sizes of the order of the bulk domain-wall width where the coercive field has a maximum. The results are explained within a generalization of the random-anisotropy model that takes into account domain-wall formation within grains and reduced interface coupling.
doi_str_mv 10.1103/physrevlett.85.1990
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source American Physical Society Journals
title Magnetic correlations in nanostructured ferromagnets
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