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Title

Interplay between collective pinning and artificial defects on domain wall propagation in Co/Pt multilayers

AuthorsRodríguez-Rodríguez, G. ; Menéndez, José Luis ; Hierro-Rodríguez, A. ; Pérez-Junquera, A.; Montenegro, N.; Ravelosona, D.; Alameda, J. M. ; Vélez, María
Issue DateAug-2010
PublisherInstitute of Physics Publishing
CitationJournal of Physics D: Applied Physics 43(30): 305002 (2010)
AbstractThe interplay between collective pinning on intrinsic structural defects and artificial pinning at a patterned hole is studied in magnetic multilayers with perpendicular anisotropy. The pinning strength of a patterned hole is measured through its efficiency to stop domain wall (DW) propagation into a consecutive unpatterned nanowire section (using antisymmetric magnetoresistance to detect the direction of DW propagation) whereas collective pinning is characterized by the field dependence of DW velocity. Close to room temperature, collective pinning becomes weaker than artificial pinning so that pinning at the hole compensates nucleation-pad geometry, blocking DW propagation across the nanowire.
Description5 páginas, 3 figuras.
Publisher version (URL)http://dx.doi.org/10.1088/0022-3727/43/30/305002
URIhttp://hdl.handle.net/10261/48201
DOI10.1088/0022-3727/43/30/305002
ISSN0022-3727
E-ISSN1361-6463
Appears in Collections:(CINN) Artículos
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