NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Novel bulk iron garnets for magneto-optic magnetic field sensing
Published
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,
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 14, 2025)