doi:10.1140/epjb/e2013-30926-5engSerrano-Ramón, L.Fernández-Pacheco, A.Ibarra, M.R.Petit, D.Cowburn, R.P.Tyliszczak, T.De Teresa, J.M.Modification of domain-wall propagation in Co nanowires via Ga+ irradiationART-2013-81493The 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.2013http://zaguan.unizar.es/record/6147110.1140/epjb/e2013-30926-5http://zaguan.unizar.es/record/61471oai:zaguan.unizar.es:61471info:eu-repo/grantAgreement/ES/MINECO/MAT2011-27553-C02info:eu-repo/grantAgreement/EC/FP7/251698/EU/Fabrication of three dimensional magnetic nanowires for information storage/3DMAGNANOWinfo:eu-repo/grantAgreement/ES/CSIC/i-LINK026EUROPEAN PHYSICAL JOURNAL B 86, 3 (2013), 97 [6 pp.]All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess