Abstract
Pronounced effects of an electric field on the Faraday rotation of Cd1-xMnxTe films prepared by ionized-cluster beam technique have been investigated in the wavelength region from 800 nm to 480 nm at room temperature. With an increase in an electric field applied to the film plane, a marked shift in dispersion frequency toward a longer wavelength region is observed in Faraday rotation spectra of the Cd1-xMnxTe film, and its peak height decreases. The electric field-induced change of peak height at the dispersion frequency is of the order of 10-4 deg./cmG per one kV/cm, and enlarges with increase in composition x. This can be explained by the ionization of excitons due to the Franz-Keldysh effect.
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