Title :
Measurement of magnetic field vector by magneto-birefringence effect of magnetic fluid
Author :
Hikihara, Takashi ; Hirane, Yoshihisa
Author_Institution :
Dept. of Electr. Eng., Kansai Univ., Osaka, Japan
fDate :
28 Oct-1 Nov 1991
Abstract :
A measurement of magnetic field vector by the magneto-birefringence effect of a magnetic fluid and the characteristics of the system are discussed. The system applies a laser diode and a thin film of magnetic fluid as a refracting element by the magneto-birefringence effect. The magnetic fluid has both the large anomalous magneto-birefringence effect and the Faraday effect. These effects cause a change in intensity and the phase shift of the refracted laser beam. In the experimental system, the method for detecting these effects was proposed. Based on the results, it was clarified that the direction of the 2-dimensional magnetic field vector can be measured for both direct and alternating magnetic field
Keywords :
Faraday effect; magnetic field measurement; magneto-optical effects; measurement by laser beam; 2-dimensional magnetic field vector; AC magnetic field; Faraday effect; laser diode; magnetic field vector; magnetic fluid; magneto-birefringence effect; phase shift; refracted laser beam; refracting element; Air gaps; Electric variables measurement; Faraday effect; Laser beams; Magnetic field measurement; Magnetic flux; Magnetic levitation; Magnetic liquids; Magnetic separation; Saturation magnetization;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1991. Proceedings. IECON '91., 1991 International Conference on
Conference_Location :
Kobe
Print_ISBN :
0-87942-688-8
DOI :
10.1109/IECON.1991.238947
