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Magnetization reversal in mesoscopic Ni80Fe20 wires: A magnetic domain launching device

Lee, W.Y., Hirohata, A., Leung, H.T., Guertler, C.M., Xu, Y.B., Gardiner, S.M., Yao, C.C. and Bland, J.A.C. (2000) Magnetization reversal in mesoscopic Ni80Fe20 wires: A magnetic domain launching device. IEEE Transactions on Magnetics. pp. 3018-3020. ISSN 1941-0069

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The magnetization reversal process in mesoscopic permalloy (Ni80Fe20) wire structures has been investigated using scanning Kerr microscopy, magnetic force microscopy (MFM) and micromagnetic calculations. We find that the junction offers a site for reversed domain wall nucleation in the narrow part of the wires. As a consequence, the switching field is dominated by the domain nucleation field and the junction region initiates reversal by the wall motion following the nucleation of domains. Our results suggest the possibility of designing structures that can be used to “launch” reverse domains in narrow wires within a controlled field range

Item Type: Article
Copyright, Publisher and Additional Information: © 2000 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: magnetization reversal,mesoscopic wires,nucleation process,switching field
Institution: The University of York
Academic Units: The University of York > Electronics (York)
Depositing User: Repository Officer
Date Deposited: 18 Dec 2006
Last Modified: 13 Jun 2016 12:09
Published Version: http://dx.doi.org/10.1109/20.908661
Status: Published
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/1856

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