Magnetooptical Overcoating of MnSb Films by Surface Oxidation

概要

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We demonstrate that surface oxidation has a pronounced effect on the magnetooptical properties of MnSb films when used as a magnetooptical overcoating technique. As a result of oxidation, the surface of the film was coated by an oxide layer and sharp divergent and dispersive structures appeared in the Kerr rotation and ellipticity spectra at around 3.7eV, respectively. The structures were very large and the absolute value of the Kerr ellipticity at 3.8eV was more than 3°, which is about 6 times larger than that of the MnSb film before oxidation. The change in these spectra due to surface oxidation was reproduced by numerical calculations.
社団法人応用物理学会の論文
1996-07-15