Title :
Sensors and actuators on orthoferrites
Author :
Didosyan, Yuri S. ; Hauser, Hans ; Reider, Georg A. ; Nicolics, Johann
Author_Institution :
Inst. of Sensor & Actuator Syst., Vienna Univ. of Technol., Austria
Abstract :
A review of magneto-optical (MO) principles applications in electric current (magnetic field) meters and angle measuring devices is presented. MO principles exhibit the advantage of both excellent electromagnetic compatibility and high bandwidth. Orthoferrites are transparent magnets characterized by a number of unique features (very high values of MO figure of merit - 99% transparency for a 45° rotator at 1520 nm, and high quality factor, extremely high domain wall velocities - up to 20 km/s) promising their use for the development of various innovative micro-technological devices with improved characteristics.
Keywords :
Faraday effect; angular measurement; electric current measurement; electromagnetic compatibility; ferrite devices; magnetic domain walls; magnetic field measurement; magneto-optical sensors; transparency; 1520 nm; 20 km/s; Faraday effect; MO figure of merit; actuators; angle measuring devices; bandwidth; domain wall velocities; electric current meters; electromagnetic compatibility; magnetic field meters; magneto-optical principles applications; magneto-optical sensors; microtechnological devices; orthoferrites; quality factor; rotator; transparency; transparent magnets; yttrium orthoferrite; Actuators; Current measurement; Electric variables measurement; Electromagnetic compatibility; Electromagnetic measurements; Goniometers; Magnetic field measurement; Magnetic sensors; Magnetooptic devices; Sensor phenomena and characterization;
Conference_Titel :
Sensors, 2004. Proceedings of IEEE
Print_ISBN :
0-7803-8692-2
DOI :
10.1109/ICSENS.2004.1426350
