In physics the magneto-optic Kerr effect (MOKE) or the surface magneto-optic Kerr effect (SMOKE) is one of the magneto-optic effects. It describes changes of the reflections from the magnetized media. It is similar to the Faraday effect that describes the light passing through the media. The light that is reflected from a magnetized surface, changes in polarization.
MOKE can be further categorized by the direction of the magnetization vector with respect to the reflecting surface and the plane of incidence.
Kerr Rotation Angle: the amount of rotation (in radians) induced in the reflected beam
Kerr Ellipticity: ratio between the minor and major axis of the ellipse induced in the reflected beam
This phenomenon is known as the Magneto-Optic Kerr Effect (MOKE).
Faraday Effect (in transmission) and Kerr effect (in reflection)
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