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Title

Modification of domain-wall propagation in Co nanowires via Ga+ irradiation

AuthorsSerrano-Ramón, Luis; Fernández-Pacheco, Amalio; Ibarra, M. Ricardo; Teresa, José María de
Issue Date2013
PublisherSpringer
CitationEuropean Physical Journal B 86: 97 (2013)
AbstractThe propagation of domain walls in polycrystalline Co nanowires grown by focused-electron-beam-induced deposition is explored. We have found that Ga + irradiation via focused ion beam is a suitable method to modify the propagation field of domain walls in magnetic conduits. Magneto-optical Kerr effect measurements show that global Ga+ irradiation of the nanowires increases the domain-wall propagation field. Additionally, we have observed by means of scanning transmission X-ray microscopy that it is possible to produce substantial domain-wall pinning via local Ga+ irradiation of a narrow region of the nanowire. In both cases, Ga+ doses of the order of 1016 ions/cm2 are required to produce such effects. These results pave the way for the controlled manipulation of domain walls in Co nanowires via Ga+ irradiation.
Publisher version (URL)http://dx.doi.org/10.1140/epjb/e2013-30926-5
URIhttp://hdl.handle.net/10261/117705
DOI10.1140/epjb/e2013-30926-5
ISSN1434-6028
E-ISSN1434-6036
Appears in Collections:(ICMA) Artículos
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