A magneto optical thin film recording medium is disclosed having very high carrier-to-noise ratios and high rotation angles. A transmission electron microscope photomicrograph (at 200,000 X) of one such medium is shown in FIG. 1. These are multi-phase amorphous materials having magnetic anisotropy perpendicular...http://www.google.es/patents/US4833043?utm_source=gb-gplus-sharePatente US4833043 - Amorphous magneto optical recording medium
