Abstract
Aiming at the high density MO media, a new scheme of Magnetic Multi-Valued (MMV) recording was introduced[1]. A quadri-valued MO media has been realized using a magnetic field modulation method. For actual application of the media, it is necessary to increase the data transfer rate and recording density. The purpose of this study is producing a quadri-valued MO media which can record with a very small switching field less than 200 Oe, which is similar field strength with an conventional MO drive. On such a media, the quadri-valued recording is available without a drastic change of the drive design. The media has twice a large data transfer rate and linear bit density than those of a conventional MO media.
© 1996 Optical Society of America
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