Magneto-optical recording medium with recordable lands and groov

Details Magneto-optical recording medium with recordable lands and groov Magneto-optical recording medium with recordable lands and groov

1997-09-23

1998-12-15

Neyzari, Ali

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

3692751, G11B 724

Patent

active

058503838

ABSTRACT:
A magneto-optical recording medium having a land/groove track formed on a transparent substrate, wherein the land and the groove of the land/groove track each has a substantially flat region, and recording is made on both the land and the groove, wherein at least an interference layer made of a dielectric and a magnetic layer made of a magnetic amorphous alloy of rare-earth metal and transition metal and having a thickness of at least 50 nm are formed, in this order, on the substrate, and relationships represented by the following formulas are satisfied:

REFERENCES:
patent: 5581539 (1996-12-01), Horie et al.
patent: 5602825 (1997-02-01), Sugaya et al.
patent: 5694379 (1997-12-01), Aratani et al.
patent: 5717682 (1998-02-01), Nomoto
Atsushi Fukumoto, et al., "Land/Groove Recording in Mo Systems," SPIE, vol. 2514, pp. 374-382.

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