Method of producing a magneto-optical recording medium

Details Method of producing a magneto-optical recording medium Method of producing a magneto-optical recording medium

1997-02-11

1998-03-24

Weisstuch, Aaron

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

20419226, 427131, 427162, C23C 1434

Patent

active

057308462

ABSTRACT:
An amorphous magnetic thin film of TbDyFeCo alloy is described, which is a multi-layer film formed by alternatively laminating a TbFeCo layer and a DyFeCo layer on a substrate and has an axis of easy magnetization perpendicular to a film surface, wherein, when the composition of the magnetic thin film is represented by Tb.sub.x Dy.sub.y (Fe.sub.l-z Co.sub.z).sub.1-(x+y) and when x, y, and z are within ranges of 0<x.ltoreq.0.12, 0<y.ltoreq.0.12, and 0<z.ltoreq.0.30, a condition to be satisfied by x and y is 0.25.ltoreq.x/(x+y). Consequently, an inexpensive magneto-optical recording medium with an improved C/N ratio is manufactured.

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