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Type: Artigo de periódico
Title: Experimental magnetic study and evidence of the exchange bias effect in unidimensional Co arrays produced by interference lithography
Author: Rosa, WO
Knobel, M
Cescato, L
Gobbi, AL
Vazquez, M
Abstract: A simple process for fabricating submicrometric magnetic arrays employing interference lithography, sputtering deposition and lift-off processes is proposed and demonstrated. The magnetic properties of cobalt (Co) arrays were measured and compared with those of a continuous Co magnetic film. The results show a dependence of the hysteresis curve on the orientation of the field as regards the array, which is correlated with the anisotropy of the structures and a dependence of the coercive field on the periodicity of the arrays. Moreover, an exchange bias effect was observed, which is ascribed to a ferromagnetic/antiferromagnetic (FM/AFM) coupling between Co and a thin surface cobalt oxide (CoO) layer. (c) 2007 Elsevier Ltd. All rights reserved.
Subject: patterned materials
exchange bias
holographic lithography
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Citation: Solid State Communications. Pergamon-elsevier Science Ltd, v. 142, n. 4, n. 228, n. 231, 2007.
Rights: fechado
Identifier DOI: 10.1016/j.ssc.2007.02.002
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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