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Título: | Micromagnetism of permalloy antidot arrays prepared from alumina templates |
Autor: | Gawronski, P.; Merazzo, K. J. CSIC ORCID; Chubykalo-Fesenko, O. CSIC ORCID; Pérez del Real, Rafael; Vázquez Villalabeitia, Manuel CSIC ORCID CVN | Palabras clave: | Permalloy Antidot arrays Micromagnetism |
Fecha de publicación: | 7-nov-2014 | Editor: | Institute of Physics Publishing | Citación: | Nanotechnology 25(47): 475703 (2014) | Resumen: | Magnetic hysteresis processes of hexagonal arrays of permalloy antidots have been studied by means of micromagnetic simulations as a function of geometrical parameters. The ideal system shows a maximum of the coercive field as a function of the antidot diameter. The simulated magnetic behavior has been compared with experimental values for antidot arrays of permalloy prepared from alumina templates with thicknesses between 2 and 60 nm, showing a monotonic increase of the coercive field as a function of the antidot diameter. We show that the introduction into simulations of the combination of variable antidot diameters from bottom to top due to the fabrication process and, more importantly, large geometrical domains, which break the sample symmetry, solves the discrepancy between the simulations and the experiment. | Versión del editor: | https://doi.org/10.1088/0957-4484/25/47/475703 | URI: | http://hdl.handle.net/10261/181521 | DOI: | 10.1088/0957-4484/25/47/475703 | ISSN: | 0957-4484 | E-ISSN: | 1361-6528 |
Aparece en las colecciones: | (ICMM) Artículos |
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