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Magneto-optic enhancement and magnetic properties in Fe antidot films with hexagonal symmetry
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
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2010 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 81, no 5, 054424- p.Article in journal (Refereed) Published
Abstract [en]

The magneto-optic and magnetic properties of hexagonal arrays of holes in optically thin iron films are presented. We analyze their dependence on the hole radius and compare the results to a continuous iron film of the same thickness. We observe a large enhancement of the magneto-optic Kerr rotation with respect to that of the continuous film, at frequencies where surface-plasmon excitations are expected. The spectral position of the Kerr maxima can be tuned by the size and the distance between the holes. Additional simulations are in very good agreement with the experiment and thus confirm the effect of the surface plasmons on the Kerr rotation. The altering of the magnetic properties by the hole array is also visible in the hysteretic behavior of the sample where a significant hardening is observed.

Place, publisher, year, edition, pages
2010. Vol. 81, no 5, 054424- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-137120DOI: 10.1103/PhysRevB.81.054424ISI: 000274998000074OAI: oai:DiVA.org:uu-137120DiVA: diva2:377878
Available from: 2010-12-15 Created: 2010-12-15 Last updated: 2017-12-11Bibliographically approved

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Papaioannou, Evangelos Th.Kapaklis, Vassilios

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