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

W.Y. Lee; A. Hirohata; H.T. Leung; C.M. Guertler; Y.B. Xu; S.M. Gardiner; C.C. Yao; J.A.C. Bland

doi:10.1109/20.908661

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

W.Y. Lee, A. Hirohata, H.T. Leung, C.M. Guertler, Y.B. Xu, S.M. Gardiner, C.C. Yao, J.A.C. Bland

Electronic Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

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

Original language	English
Pages (from-to)	3018-3020
Number of pages	2
Journal	IEEE Transactions on Magnetics
Volume	36
Issue number	5 (Part 1)
DOIs	https://doi.org/10.1109/20.908661
Publication status	Published - Sept 2000

Bibliographical note

© 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

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10.1109/20.908661

xuyb16.pdf

http://dx.doi.org/10.1109/20.908661

Cite this

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title = "Magnetization reversal in mesoscopic Ni80Fe20 wires: A magnetic domain launching device",

abstract = "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",

keywords = "magnetization reversal, mesoscopic wires, nucleation process, switching field",

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T1 - Magnetization reversal in mesoscopic Ni80Fe20 wires: A magnetic domain launching device

AU - Lee, W.Y.

AU - Hirohata, A.

AU - Leung, H.T.

AU - Guertler, C.M.

AU - Xu, Y.B.

AU - Gardiner, S.M.

AU - Yao, C.C.

AU - Bland, J.A.C.

N1 - © 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.

PY - 2000/9

Y1 - 2000/9

N2 - 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

AB - 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

KW - magnetization reversal

KW - mesoscopic wires

KW - nucleation process

KW - switching field

U2 - 10.1109/20.908661

DO - 10.1109/20.908661

M3 - Article

SN - 0018-9464

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SP - 3018

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

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