Title :
Fast, sensitive magnetic-field sensors based on the Faraday effect in YIG
Author :
Deeter, M.N. ; Rose, A.H. ; Day, G.W.
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
12/1/1990 12:00:00 AM
Abstract :
Magnetic-field sensors based on the Faraday effect in ferrimagnetic iron garnets are investigated in terms of their sensitivity, speed, and directionality. Signal-to-noise measurements at 80 Hz on small (typically 5-mm-diameter×3-mm-long) samples of yttrium iron garnet (YIG) yield noise equivalent magnetic fields of 10 nT/√Hz. Frequency-response measurements exhibit virtually flat response to approximately 700 MHz
Keywords :
Faraday effect; electric sensing devices; garnets; magnetic field measurement; yttrium compounds; 80 Hz; Faraday effect; YFe5O12; ferrimagnetic iron garnets; flat response; frequency response measurements; magnetic field sensor directionality; magnetic field sensor speed; noise equivalent magnetic fields; sensitive magnetic-field sensors; signal-to-noise measurements; Faraday effect; Ferrimagnetic materials; Frequency; Garnets; Iron; Magnetic field measurement; Magnetic noise; Magnetic sensors; Noise measurement; Yttrium;
Journal_Title :
Lightwave Technology, Journal of
