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

Serrano-Ramón, L. ; Fernández-Pacheco, A. ; Ibarra, M.R. (Universidad de Zaragoza) ; Petit, D. ; Cowburn, R.P. ; Tyliszczak, T. ; De Teresa, J.M. (Universidad de Zaragoza)

Resumen: The 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.

Idioma: Inglés

DOI: 10.1140/epjb/e2013-30926-5

Año: 2013

Publicado en: EUROPEAN PHYSICAL JOURNAL B 86, 3 (2013), 97 [6 pp.]
ISSN: 1434-6028

Factor impacto JCR: 1.463 (2013)

Categ. JCR: PHYSICS, CONDENSED MATTER rank: 42 / 67 = 0.627 (2013) - Q3 - T2

Financiación: info:eu-repo/grantAgreement/ES/CSIC/i-LINK026
Financiación: info:eu-repo/grantAgreement/EC/FP7/251698/EU/Fabrication of three dimensional magnetic nanowires for information storage/3DMAGNANOW
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2011-27553-C02

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)