High density magneto-optical disk technologies

Abstract

Many types of high density recording technologies have been proposed in the field of magneto-optical recording to satisfy demands of storing a large amount of digital information. Magnetically induced super resolution (MSR) is one of the most hopeful technology. However, trials of using the MSR technology in a realistic magneto-optical system were not fully investigated. Previously, we reported the concept and fundamental results of experiments and calculations of a high density magneto-optical recording system using a combination of a center-aperture-detection type of MSR (CAD-MSR) disk and other technologies. In this study, we have improved each of the technology discussed in our previous report. Moreover, we have evaluated the feasibility of magneto-optical disk systems which have a 4 Gbit/in/sup 2/ density with taking account of the margins.