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Effect of interface number on giant magnetoresistance

Lookup NU author(s): Dr Alasdair Charles

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Abstract

Ni(Cu)/Cu, Co(Cu)/Cu, and Ni-Co(Cu)/Cu multilayers with a varied number of interfaces (i.e. bi-layers) were electrodeposited on gold coated quartz discs in a flow channel cell by a potentiostatic dual-pulse plating method. It was found that the giant magnetoresistance of these multilayers increased almost linearly with increase in the number of interfaces. This result confirms that the interfaces play a dominating role in giant magnetoresistance. Comparable samples of these three types of multilayers were prepared under identical electrochemical conditions from appropriate baths. The result showed that Ni-Co(Cu)/Cu multilayers exhibited much higher giant magnetoresistance than Ni(Cu)/Cu, and Co(Cu)/Cu multilayers, which was possibly due to the structural differences between the multilayers. (C) 2009 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Dulal SMSI, Charles EA

Publication type: Article

Publication status: Published

Journal: Journal of Physics and Chemistry of Solids

Year: 2010

Volume: 71

Issue: 3

Pages: 309-313

Print publication date: 01/03/2010

ISSN (print): 0022-3697

ISSN (electronic): 1879-2553

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.jpcs.2009.12.082

DOI: 10.1016/j.jpcs.2009.12.082

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