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Magneto-optical and magnetoresistive properties of CoFe-MgO nanocomposite films
KTH, School of Engineering Sciences (SCI), Applied Physics, Nanostructure Physics.ORCID iD: 0000-0003-2339-1692
2010 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 107, no 9, 09A947- p.Article in journal (Refereed) Published
Abstract [en]

Nanocomposite CoFe-MgO films, where magnetic CoFe grains are embedded into an insulating MgO matrix, show a pronounced correlation between the tunneling magnetoresistance (TMR) and the magnetorefractive effect properties. The effect is due to the contribution of the spin-dependent conductivity to the optical conductivity of the films. Furthermore, an enhanced magneto-optical Kerr rotation is observed and explained as due to the changes in the band structures at the surface of the magnetic grains and the respective changes in the off-diagonal optical conductivity. The observed effects may prove useful for noncontact characterization of TMR materials.

Place, publisher, year, edition, pages
2010. Vol. 107, no 9, 09A947- p.
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Physical Sciences
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URN: urn:nbn:se:kth:diva-29839DOI: 10.1063/1.3367967ISI: 000277834300152OAI: oai:DiVA.org:kth-29839DiVA: diva2:399876
Note
QC 20110224 11th Joint MMM-Intermag Conference, Washington, DC, JAN 18-22, 2010 Available from: 2011-02-24 Created: 2011-02-17 Last updated: 2017-12-11Bibliographically approved

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Korenivski, Vladislav

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