Discontinuous resistance change and domain wall scattering in patterned NiFe wires with a nanoconstriction

Lepadatu, S and Xu, Y B (2004) Discontinuous resistance change and domain wall scattering in patterned NiFe wires with a nanoconstriction. IEEE TRANSACTIONS ON MAGNETICS. pp. 2688-2690. ISSN 0018-9464

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Abstract

A nonlinear current-voltage (I-V) characteristic was observed in patterned NiFe wires with a central "bow-tie" point contact constriction. By passing a dc current through the wire, a sharp resistance drop was obtained for current densities in the range of 1.1-1.4 x 10(7) A/cm(2). This is attributed to current-induced domain wall drag, resulting in displacement of a domain wall away from the constriction. A maximum current-induced resistance change of 0.079% was obtained for a 100-nm constriction, which is comparable with the magnetoresistance due to domain wall scattering in NiFe.

Item Type:	Article
Copyright, Publisher and Additional Information:	© 2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	domain wall movement, domain wall scattering, magnetoresistance, nanoconstriction, RESISTIVITY, MOTION
Academic Units:	The University of York > Electronics (York)
Depositing User:	Repository Officer
Date Deposited:	18 Dec 2006
Last Modified:	19 Feb 2013 11:53
Published Version:	http://dx.doi.org/10.1109/TMAG.2004.832369
Status:	Published
Refereed:	Yes
Related URLs:	http://dx.doi.org/10.1109/TMAG.2004.8323...
URI:	http://eprints.whiterose.ac.uk/id/eprint/1843

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