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Competing anisotropies in bcc Fe81Ni19/Co(001) superlattices
University of Hamburg. (Institute of Theoretical Physics)
Uppsala University. (Materialfysik)
Uppsala Universitet. (Materialkemi)
Radboud University. (Institute for Molecules and Materials)
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2009 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 94, no 7, 073102/1-073102/3 p.Article in journal (Refereed) Published
Abstract [en]

A magnetization reorientation transition has been obsd. in Fe81Ni19/Co(001) superlattices by means of magneto-optical Kerr effect and magnetic force microscopy measurements. The transition is driven by the variation of the interface d. First-principles calcns. are combined with a linear stability anal. of the Landau-Lifshitz equation to clarify the mechanism that drives the transition. We are able to identify it as being driven by competing interface in-plane and uniaxial bulk out-of-plane anisotropies. The origin of the bulk anisotropy is attributed to tetragonal distortions exptl. obsd. in these superlattices.

Place, publisher, year, edition, pages
2009. Vol. 94, no 7, 073102/1-073102/3 p.
Keyword [en]
iron nickel superlattice cobalt magnetic anisotropy magnetization reorientation transition
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:kth:diva-78461DOI: 10.1063/1.3081107ISI: 000263599200058OAI: oai:DiVA.org:kth-78461DiVA: diva2:495721
Funder
Swedish Research Council
Note
QC 20120213Available from: 2012-02-09 Created: 2012-02-08 Last updated: 2017-12-07Bibliographically approved

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