Title :
Magneto-optic magnetic field sensor with 1.4 pT/ square root (Hz) minimum detectable field at 1 kHz
Author :
Day, G.W. ; Beahn, T.J. ; Manheimer, Marc
fDate :
5/27/1993 12:00:00 AM
Abstract :
The Letter demonstrates that the sensitivity of magneto-optic magnetic field sensors employing iron garnets can be increased by approximately two orders of magnitude by applying flux concentration. A minimum detectable field of 1.4 pT/ square root (Hz) was measured when a cylindrical gallium-substituted yttrium iron garnet crystal was combined with two conically tapered nickel-zinc ferrite cylinders.
Keywords :
garnets; magnetic field measurement; magnetic flux; magneto-optical devices; optical sensors; yttrium compounds; 1 kHz; YFe5O12Ga5O12; YIGGG; conically tapered NiZnFe 2O 4 cylinders; flux concentration; magneto-optic magnetic field sensors; minimum detectable field; sensitivity;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19930661
