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A New Magnetooptical Effect Discovered on Magnetic Multilayers: The Magnetorefractive Effect

Published online by Cambridge University Press:  15 February 2011

J. C. Jacquet and
T. Valet
J. C. Jacquet
Affiliation:
THOMSON CSF, Laboratoire Central de Recherches, Domaine de Corbeville, 91 404 Orsay Cedex, France
T. Valet
Affiliation:
THOMSON CSF, Laboratoire Central de Recherches, Domaine de Corbeville, 91 404 Orsay Cedex, France
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Abstract

We show theoretically that the change in the magnetization structure of magnetic metallic multilayers under the application of a magnetic field shall be generally associated with a significant change of the refractive index. This constitutes a new magnetooptical effect: the magnetorefractive effect.

Optical transmission measurements under an applied magnetic field through [Ni80Fe20/Cu/Co/Cu] multilayers, in the light wavelength region between 2 μm and 20 μm, clearly demonstrate the existence of the predicted effect and are found in reasonnable agreement with the theoretical calculations.

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