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Title

Magneto-optic enhancement and magnetic properties in Fe antidot films with hexagonal symmetry

AuthorsPapaioannou, E. Th.; Kapaklis, Vassilios; Patoka, Piotr; Giersig, Michael; Fumagalli, Paul; García-Martín, Antonio ; Ferreiro-Vila, Elías ; Ctistis, Georgios
KeywordsMagneto-optic
Arrays of holes
Surface-plasmon
Issue Date17-Feb-2010
PublisherAmerican Physical Society
CitationPhysical Review B 81, 054424 (2010)
AbstractThe 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.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.81.054424
URIhttp://hdl.handle.net/10261/25484
DOI10.1103/PhysRevB.81.054424
ISSN0163-1829
Appears in Collections:(IMN-CNM) Artículos
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