Abstract
MnAs and MnSb thin films were grown on GaAs (100) substrates by hot-wall epitaxy (HWE) technique. Epitaxial growth with (10-11) axis parallel to GaAs (100) surface was observed in both films. Polar magneto-optical Kerr rotation and Kerr ellipticity spectra were measured in these samples. For MnAs, it is for the first time that reliable polar Kerr spectra were obtained.
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