A measurement of a magnetic field vector-application of the magneto-birefringence effect by magnetic fluid

Author

Hikihara, Takashi ; Hirane, Yoshihisa

Author_Institution

Dept. of Electr. Eng., Kansai Univ., Osaka, Japan

Volume

39

Issue

5

fYear

1992

fDate

10/1/1992 12:00:00 AM

Firstpage

392

Lastpage

397

Abstract

The measurement of a magnetic field vector using the magneto-birefringence effect in a magnetic fluid is discussed, and the characteristics of the experimental system are described. The system applies a laser diode and a thin film of magnetic fluid as a refracting element to measure magneto-birefringence. Magnetic fluids have both a large anomalous magneto-birefringence effect and a Faraday effect. These effects cause the change of intensity and the phase shift of a refracted laser beam. In the experimental system, a method for detecting these effects is proposed. On the basis of the experimental results, it is clear that the direction and the intensity of a two-dimensional magnetic field vector can be measured in the cases of both direct and alternating magnetic fields

Keywords

Faraday effect; birefringence; magnetic field measurement; magnetic fluids; magneto-optical effects; measurement by laser beam; 2D magnetic field vector; Faraday effect; laser diode; magnetic field vector measurement; magnetic fluid; magneto-birefringence effect; phase shift; refracted laser beam; thin film; Air gaps; Faraday effect; Laser beams; Magnetic field measurement; Magnetic flux; Magnetic levitation; Magnetic liquids; Magnetic sensors; Optical refraction; Superconducting magnets;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.161470

Filename

161470