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Magnetic antidot to dot crossover in Co and Py nanopatterned thin films

AuthorsCastán-Guerrero, C.; Herrero-Albillos, Julia; Bartolomé, Juan; Bartolomé, Fernando; Rodríguez, Luis A.; Magen, Cesar; Chubykalo-Fesenko, O. ; Merazzo, K. J. ; Vavassori, Paolo; Strichovanec, Pavel; Sesé Monclús, Javier ; García, L. M.
Issue Date2014
PublisherAmerican Physical Society
CitationPhysical Review B 89: 144405 (2014)
AbstractThe crossover from antidot to dot magnetic behavior on arrays patterned in a ferromagnetic thin film has been achieved by modifying only the geometry. A series of antidot arrays has been fabricated on cobalt with fixed diameter d and by reducing the period of the array p from pd to p<d. A dramatic change in the coercivity dependence with p, correlated with a significant modification in the magnetic domain structure observed by x-ray photoemission electron microscopy, evidences the crossover. An intermediate regime has been found between the superdomain structure present in antidot arrays and the array of astroid-state noncorrelated dots. The study has been reproduced for a different ferromagnetic material, permalloy, and supported by micromagnetic simulations. © 2014 American Physical Society.
DescriptionUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).-- et al.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.89.144405
Identifiersdoi: 10.1103/PhysRevB.89.144405
e-issn: 1550-235X
issn: 1098-0121
Appears in Collections:(ICMM) Artículos
(ICMA) Artículos
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