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Optimized cobalt nanowires for domain wall manipulation imaged by in situ Lorentz microscopy

AuthorsRodríguez, Luis A.; Magen, Cesar; Snoeck, E.; Serrano-Ramón, Luis; Córdoba, R.; Teresa, José María de; Ibarra, M. Ricardo
Issue Date2013
PublisherAmerican Institute of Physics
CitationApplied Physics Letters 102(2): 022418 (2013)
AbstractDirect observation of domain wall (DW) nucleation and propagation in focused electron beam induced deposited Co nanowires as a function of their dimensions was carried out by Lorentz microscopy (LTEM) upon in situ application of magnetic field. Optimal dimensions favoring the unambiguous DW nucleation/propagation required for applications were found in 500-nm-wide and 13-nm-thick Co nanowires, with a maximum nucleation field and the largest gap between nucleation and propagation fields. The internal DW structures were resolved using the transport-of-intensity equation formalism in LTEM images and showed that the optimal nanowire dimensions correspond to the crossover between the nucleation of transverse and vortex walls.
DescriptionUnder the terms of the Creative Commons Attribution 3.0 Unported License.-- et al.
Publisher version (URL)http://dx.doi.org/10.1063/1.4776709
Identifiersdoi: 10.1063/1.4776709
issn: 0003-6951
e-issn: 1077-3118
Appears in Collections:(ICMA) Artículos
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