Stock material or miscellaneous articles – Composite – Of inorganic material
Patent
1994-12-19
1997-07-01
Kiliman, Leszek
Stock material or miscellaneous articles
Composite
Of inorganic material
428212, 428213, 428332, 428336, 428694NF, 428694DE, 428694XS, 428900, 427128, 427129, 427130, 427131, 2041921, 20419212, 2041922, 20419226, G11B 566
Patent
active
056436874
ABSTRACT:
A magneto-optic memory medium including a first dielectric layer having a first main surface and a second main surface; a second dielectric layer for covering the first main surface of the first dielectric layer; and a magneto-optic memory layer for covering the second dielectric layer. The first dielectric layer is formed of an oxide having a refractive index in the range of 2.4 or more and 3.5 or less, and the second dielectric layer is formed of a material containing no oxygen. The magneto-optic memory medium is produced by the steps of forming a first layer by performing reactive sputtering in an atmosphere of a first sputter gas using a material containing a first element as a target; switching the first sputter gas to a second sputter gas; forming a second layer on the first layer by performing reactive sputtering in an atmosphere of the second sputter gas using a material containing the first element as a target; and forming a magneto-optic memory layer on the second dielectric layer.
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patent: 5228024 (1993-07-01), Moon et al.
English Abstract of JP--61-227,243 dated Sep. 10, 1986.
Tu Chen et al., "An Investigation of Amorphous Tb-Fe Thin Films for Magneto-Optic Memory Application", IEEE. Transaction on Magnetics, vol. MAG-16, No. 5, Sep. 1980, pp. 1194-1196.
Iketani Naoyasu
Katayama Hiroyuki
Nakayama Junichiro
Ohta Kenji
Kiliman Leszek
Sharp Kabushiki Kaisha
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