Magneto-optical recording medium production method

Details Magneto-optical recording medium production method Magneto-optical recording medium production method

1997-10-30

2000-03-07

Gupta, Yogendra

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

20419212, 2041922, 20419225, 427548, C23C 1434

Patent

active

060335386

ABSTRACT:
In a magneto-optical recording medium including a first magnetic layer which is magnetized in a predetermined direction according to a data signal and a second magnetic layer which is magnetically connected to the first magnetic layer by exchange interaction, so that a boundary magnetic wall can exist between the first magnetic layer and the second magnetic layer, the present invention increases stability of the boundary magnetic wall formed between the first magnetic layer and the second magnetic layer and to enhance a reproduction durability as well as durability against repeated recording.
The first magnetic layer and the second magnetic layer are formed by sputtering. At least one of the magnetic layers composing the first magnetic layer and positioned adjacent to the second magnetic layer is formed with a sputter gas pressure greater than the sputter gas pressure applied when forming a magnetic layer composing the second magnetic layer and positioned adjacent to the first magnetic layer.

REFERENCES:
patent: 5106703 (1992-04-01), Carcia
patent: 5441804 (1995-08-01), Akitake et al.
patent: 5585200 (1996-12-01), Sato et al.
patent: 5599580 (1997-02-01), Futamoto et al.
patent: 5603814 (1997-02-01), Tsutsumi et al.
patent: 5648161 (1997-07-01), Miyazawa et al.
patent: 5757736 (1998-05-01), Onagi
patent: 5824427 (1998-10-01), Kobayashi et al.
patent: 5838645 (1998-11-01), Hirokane et al.
patent: 5876807 (1999-03-01), Muto

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