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Title

Domain configuration and magnetization switching in arrays of permalloy nanostripes

AuthorsIglesias-Freire, Óscar ; Jaafar, Miriam ; Pérez, Lucas; Abril, O. de; Vázquez Villalabeitia, Manuel ; Asenjo Barahona, Agustina
KeywordsMagnetic Force Microscopy
Magnetostatic coupling
Magnetization reversal
Magneticnanostripe
Issue Date2014
PublisherElsevier
CitationJournal of Magnetism and Magnetic Materials 355: 152-157 (2014)
AbstractThe proximity effect in the collective behavior of arrays of magnetic nanostripes is currently a subject of intensive research. The imperative of reducing the size and distances between elements in order to achieve higher storage capacity, faster access to the information as well as low energy consumption, brings consequences about the isolated behavior of the elements and devices. Parallel to each other permalloy nanostripes with high aspect ratio have been prepared by the nanolithography technique. The evolution of the closure domains and the magnetization direction in individual nanostructures has been imaged under applied magnetic fields using Variable Field Magnetic Force Microscopy. Moreover, the magnetostatic interactions between neighboring elements and the proximity effects in arrays of such nanostructures have been quantitatively analyzed by Magnetic Force Microscopy and micromagnetic simulations. The agreement between simulations and the experimental results allows us to conclude the relevance of those interactions depending on the geometry characteristics. In particular, results suggest that the magnetostatic coupling between adjacent nanostripes vanishes for separation distances higher than 500 nm. © 2013 Elsevier B.V.
URIhttp://hdl.handle.net/10261/94161
DOI10.1016/j.jmmm.2013.12.012
Identifiersdoi: 10.1016/j.jmmm.2013.12.012
issn: 0304-8853
Appears in Collections:(ICMM) Artículos
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