Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1997-06-30
1999-01-26
Neyzari, Ali
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
360 59, G11B 1100
Patent
active
058645209
ABSTRACT:
In a magneto-optical recording medium for super resolution reproduction, a recording layer having a Curie temperature of 300.degree. C. or higher is used. An inhibition force for inhibiting movement of a domain wall in the recording layer is enhanced, while the magnetization is sufficiently increased such that a contraction force, which decreases a surface area of the domain wall, can be decreased. Thus, recording domains become stable during recording and erasing. Further, cross erasing characteristics can be improved, while maintaining previously used recording and erasing powers. The inhibition force becomes larger than the contraction force, even if the Curie temperature is low, when the recording layer is made of a first magnetic material for forming recording domains which have a compensation temperature between 0.degree. and 200.degree. C., or when the compensation temperature of the recording layer is between 0.degree. and 200.degree. C.
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Birukawa Masahiro
Fukamachi Yuichi
Matsushita Electric - Industrial Co., Ltd.
Neyzari Ali
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