The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 1997
Filed:
Nov. 09, 1993
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; C23C / ;
U.S. Cl.
CPC ...
20419222 ; 20419226 ; 2041922 ; 4286 / ; 4286 / ; 4286 / ; 428800 ; 428 643 ; 360 59 ; 360114 ; 360131 ; 360135 ; 365122 ; 369 13 ;
Abstract
A method of making a magneto-optical disk. A first AlGeN dielectric film is formed by reactive sputtering on a substrate. Two targets, one of aluminum and one of germanium, are used in the sputtering in a mixed atmosphere having at least nitrogen gas. Alternatively, a single target using an aluminum germanium alloy can be used. A magnetic film is formed on top of this dielectric film. A second dielectric film is then formed on top of the magnetic film. An adhesive film is formed on top of the second dielectric film and a second substrate adhered thereto.