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Wideband current and magnetic field sensors based on iron garnets

Published

Author(s)

M. N. Deeter, Kent B. Rochford, Allen Rose, Gordon W. Day

Abstract

Sensors based on the Faraday effect can be configured to measure either magnetic fields or electric currents. Such sensors can be constructed without introducing conducting materials which are often undesirable. Presently, the most sensitive Faraday effect sensors employ ferrimagnetic iron garnets as the sensing elements. With these materials, we have demonstrated minimum detectable fields as low as 1 pT/Hz1⁄2 and currents as low as 200 nA/Hz1⁄2. This paper reviews these and other recent research results obtained at NIST and considers prospects for still further improvements in sensitivity and frequency response.
Proceedings Title
Tech. Program, 3rd Annual DARPA Symp. on Photonic Systems for Antenna Applications,
Conference Dates
January 20-22, 1993
Conference Location
Monterey, CA, US

Citation

Deeter, M. , Rochford, K. , Rose, A. and Day, G. (1993), Wideband current and magnetic field sensors based on iron garnets, Tech. Program, 3rd Annual DARPA Symp. on Photonic Systems for Antenna Applications,, Monterey, CA, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=20735 (Accessed April 23, 2024)
Created December 31, 1992, Updated October 12, 2021