NDLI: Domain Wall Propagation in Nearly Zero Magnetostrictive Amorphous Microwires

Content Provider	IEEE Xplore Digital Library
Author	Chiriac, H. Ovari, T.-A. Tibu, M.
Copyright Year	1965
Abstract	Results on the investigation of the propagating 180^deg domain walls in bistable amorphous glass-coated microwires with nearly zero magnetostriction are reported for the first time. As-cast glass-coated microwires are bistable only if their metallic nucleus diameter is larger than 20 mum. Glass removal induces bistability in microwires with metallic nucleus diameters below 20 mum. Nearly zero magnetostrictive glass-coated microwires display larger domain wall velocities and mobilities as compared to positive magnetostrictive microwires. Samples that become bistable after glass removal display smaller values of the wall mobility as compared to as-cast bistable microwires. Mobility can be increased by annealing. The experimental results have been explained based on the damping mechanisms of the domain wall motion, specifically on the spin relaxation damping, whose coefficient is proportional to the anisotropy constant from the microwire's inner core. Stress relief determined by glass removal and annealing have been considered. The results are important for future applications of nearly zero magnetostrictive microwires in spintronic devices.
Sponsorship	IEEE Magnetics Society
Starting Page	3931
Ending Page	3933
Page Count	3
File Size	114528
File Format	PDF
ISSN	00189464
Volume Number	44
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Amorphous magnetic materials Magnetic domain walls Magnetic domains Magnetostriction Amorphous materials Magnetic anisotropy Perpendicular magnetic anisotropy Glass Displays Annealing magnetic anisotropy Amorphous glass-coated microwires domain wall propagation large Barkhausen effect
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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