Novel bulk iron garnets for magneto-optic magnetic field sensing

Published

November 1, 1994

Author(s)

M. N. Deeter, S. Milianbon, Gordon W. Day, G. Diercks, S. Samuelson

Abstract

We report measurements of the magneto-optic response function and frequency response for three bulk iron garnet crystals grown by a flux technique. The samples were the product of an intensive effort to develop iron garnet compositions with properties specifically optimized for magnetic field sensing. Sensitivity enhancement was achieved through both bismuth substitution (for increasing the saturation Faraday rotation) and gallium substitution (for reducing the saturation magnetization). One sample exhibited a value of magneto-optic sensitivity of 25°/mT for 1.3 υm light. Frequency response measurements indicate that bismuth substitution actually improves performance (compared to unsubstituted yttrium iron garnet) in contrast with gallium, which causes substantial degradation.

Proceedings Title

Proc., IEEE Trans. Magn., 6th Joint Magnetism and Magnetic Materials Intl. Mag. Conf., Albuquerque, NM,

Volume

30

Issue

6

Conference Dates

June 20-23, 1994

Conference Location

Albuquerque, NM, US

Pub Type

Conferences

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Citation

Deeter, M. , Milianbon, S. , Day, G. , Diercks, G. and Samuelson, S. (1994), Novel bulk iron garnets for magneto-optic magnetic field sensing, Proc., IEEE Trans. Magn., 6th Joint Magnetism and Magnetic Materials Intl. Mag. Conf., Albuquerque, NM,, Albuquerque, NM, US, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=1943 (Accessed October 15, 2025)