NDLI: Magnetic Domain Wall Formation in Ferromagnetic Wires With a Nanoconstriction

Content Provider	IEEE Xplore Digital Library
Author	Li, G.D. Zhai, Y. Wong, P.K.J. Niu, D.X. Lu, Y.X. Lepadatu, S. Xu, Y.B.
Copyright Year	1965
Abstract	The magnetization distribution and the formation of magnetic domain wall (DW) in ferromagnetic metal wires with a nanoscale constriction have been investigated in details using the micromagnetic simulation. It is found that the angle of the nanoconstriction plays an important role in controlling the formation of the magnetic DW. For different ferromagnetic metals, NiFe, Ni, Fe and Co, the domain structures and formation of the DW are also found to be distinctly different. In the NiFe wires, the optimum constriction angle for a well defined head-to-head/tail-to-tail DW is around 10deg while in Ni, it is around 14deg. For large constriction angles in Fe and Co wires, the magnetizations across the nanocontact tend to align along the same direction without a DW. However, Fe and Co wires tend to form complex vortex magnetic domains or single domains in the wires and across the nanocontacts in sharp contrast with the NiFe and Ni wires of the same shape and size
Sponsorship	IEEE Magnetics Society
Starting Page	2830
Ending Page	2832
Page Count	3
File Size	326595
File Format	PDF
ISSN	00189464
Volume Number	43
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic domain walls Wires Magnetic anisotropy Perpendicular magnetic anisotropy Magnetosphere Magnetic domains Magnetization Iron Shape control Micromagnetics spin configuration Magnetic film magnetization reversal process simulation
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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