Super-resolution magnetooptical recording medium using magnetic

Details Super-resolution magnetooptical recording medium using magnetic Super-resolution magnetooptical recording medium using magnetic

1995-08-04

1997-09-09

Hindi, Nabil

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369 13, G11B 1100

Patent

active

056663463

ABSTRACT:
A magnetooptical recording medium and a method for reproducing information from the medium wherein the medium includes a first magnetic layer which has in-plane magnetization at room temperature and vertical magnetization at an elevated temperature, a second magnetic layer for storing information which has vertical magnetization between room temperature and its Curie temperature, and a third magnetic layer disposed between the first and second magnetic layers and made of a magnetic phase transition material which undergoes a reversible change from antiferromagnetism to ferromagnetism at a phase transition temperature near the temperature at which the first magnetic layer changes from in-plane magnetization to vertical magnetization.

REFERENCES:
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patent: 5420846 (1995-05-01), Sugiyama et al.
patent: 5432774 (1995-07-01), Fukumoto et al.
patent: 5493545 (1996-02-01), Matsumoto
patent: 5502692 (1996-03-01), Osato
Patent Abstracts of Japan, vol. 16, No. 502, published Oct. 16, 1992.
English Abstract of Japanese Patent No. 4-181534.
Patent Abstracts of Japan, vol. 16, No. 100, published Mar. 11, 1992.
English Abstract of Japanese Paent No. 3-276441.
Patent Abstracts of Japan, vol. 15, No. 47, published Feb. 5, 1991.
English Abstract of Japanese Patent No. 2-281442.

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