NDLI: Influences of Extra Magnets on Giant Magnetoimpedance Effect in Amorphous Wires

Content Provider	IEEE Xplore Digital Library
Author	Hao Pang Gen Li Zhen Li Zan-Ji Wang
Copyright Year	1965
Abstract	Adjacent extra magnets can induce an additional impedance to an amorphous wire. We have studied the additional impedance passing through a magnetic ring and found that it is related to the electromagnetic characteristics, shapes, and locations of the extra magnet and the frequency of the ac excitation, regardless of the amorphous material properties and the extra magnetic field conditions. According to our theoretical analysis, the additional impedance severely reduces the magnetoimpedance change of the amorphous wire and destroys the giant magnetoimpedance characteristic. We therefore propose a return structure to diminish the additional impedance. Our experiments measured the impedances of an amorphous wire, a Cu wire, and the return structure with a variety of extra magnetic fields. The results confirmed the characteristics of the additional impedance and verified the effectiveness of the return structure.
Sponsorship	IEEE Magnetics Society
Starting Page	3223
Ending Page	3227
Page Count	5
File Size	559303
File Format	PDF
ISSN	00189464
Volume Number	45
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnets Amorphous magnetic materials Amorphous materials Impedance Wire Magnetic field measurement Electromagnetic fields Shape Frequency Magnetic properties Maxwell equations Amorphous wires giant magnetoimpedance magnetic transducers
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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