Magneto optical disc, apparatus for reproducing the same and met

Details Magneto optical disc, apparatus for reproducing the same and met Magneto optical disc, apparatus for reproducing the same and met

1996-05-06

1997-10-28

Kiliman, Leszek

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428694ML, 428694MM, 428694EC, 428694SC, 428694LE, 428694IS, 428611, 428615, 428621, 428635, 428668, 428670, 428900, 3692752, 3692753, 365122, 360 59, 360114, G11B 566

Patent

active

056816332

ABSTRACT:
A magneto optical disc, is provided with: a record layer to which information is recorded in a perpendicular magnetization condition; a switch layer, which perpendicular magnetic anisotropy is reduced at a room temperature and is increased at a temperature close to a predetermined reproduction temperature; and a reproduction layer opposed to the record layer through the switch layer to have a switched connection with the record layer by the switch layer.

REFERENCES:
patent: 5428586 (1995-06-01), Kobayashi et al.
Aratani et al "Magnetic and Magneto-optic Properties of TbFeCoAl Films"; J. Appl. Phys. (57)(1); Apr. 15, 1985 pp. 3903-3905.
Gambino et al "Exchange Coupled CoPd/TbCo Magneto-optic Storage Films"; IEEE Trans. Magn. (75)(5); Sep. 1989; pp. 3749-3751.

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