Distance sensors utilizing large Barkhausen effect excited by wire current pulse train in twisted amorphous magnetostrictive wires

Author

Mizutani, M. ; Katoh, H. ; Panina, V. ; Mohri, K. ; Humphrey, F.E.

Author_Institution

NTN Ltd., Iwata, Japan

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3174

Lastpage

3176

Abstract

A new distance sensor utilizing stepwise domain wall propagation caused by a pulse wire current train in a twisted magnetostrictive amorphous wire is presented. A 1000-mm long digital distance sensor having a nonlinearity of 0.5% FS and a simple construction is realized. The sensor characteristics are controlled by applying torsion. The stepwise domain wall propagation characteristics are compared with those for a steady state domain wall propagation

Keywords

Barkhausen effect; distance measurement; electric sensing devices; magnetic domain walls; magnetic properties of amorphous substances; magnetostrictive devices; 1000 mm; distance sensor; large Barkhausen effect; stepwise domain wall propagation; torsion; twisted amorphous magnetostrictive wires; wire current pulse train; Amorphous magnetic materials; Amorphous materials; Coils; Magnetic anisotropy; Magnetic domain walls; Magnetic sensors; Magnetostriction; Perpendicular magnetic anisotropy; Sensor phenomena and characterization; Wire;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281127

Filename

281127