Amorphous wire magnetic field and DC current sensor based on the inverse Wiedemann effect

Author

Pulido, E. ; del Real, R.P. ; Conde, F. ; Rivero, G. ; Vázquez, M. ; Ascasibar, E. ; Hernando, A.

Author_Institution

Inst. de Magnetismo Aplicado, Univ., Complutense, Madrid, Spain

Volume

27

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

5241

Lastpage

5243

Abstract

A magnetic field sensor is presented which is based on the inverse Wiedemann effect (IWE) on amorphous wires. The external magnetic DC field to be detected changes the time symmetry of the output voltage induced in a pick-up coil, creating even harmonics. Measurement results show important advantages in sensitivity and working frequencies mainly due to the core´s geometry. The sensor has outstanding sensitivity for magnetic fields below 0.02 mT, as well as a low working frequency and current intensity

Keywords

Wiedemann effect; electric sensing devices; magnetic field measurement; magnetic properties of amorphous substances; magnetostrictive devices; metallic glasses; DC current sensor; amorphous wires; even harmonics; inverse Wiedemann effect; low working frequency; magnetic field sensor; metallic glasses; pick-up coil; sensitivity; Amorphous magnetic materials; Amorphous materials; Coils; Frequency measurement; Geometry; Magnetic cores; Magnetic field measurement; Magnetic sensors; Voltage; Wire;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.278800

Filename

278800