Recording magnetooptical recording medium

Details Recording magnetooptical recording medium Recording magnetooptical recording medium

1991-07-25

1993-04-20

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

360131, 365122, 369 13, 428900, G11B 566

Patent

active

052041930

ABSTRACT:
A Curie temperature (Tc) writing magnetooptical recording medium which uses a dual perpendicular magnetic layer is composed of a first layer having a low Curie point (TL) and a high coercive force (HH) and a second layer having a relatively high Curie point (TH) and low coercive force (HL) and wherein data is written by applying an external magnetic field to the medium which is heated to a temperature higher than the low Curie point (TL) and lower than the high Curie point (TH). The Tc writing magnetooptical recording medium is characterized in that both the first and second layers are made of an RE-Fe-Co amorphous alloy, wherein the RE represents at least one rare earth metal selected from the group consisting of Tb, Dy, Gd and Ho.

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