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:
Oct. 12, 1993
Filed:
May. 20, 1992
Applicant:
Inventors:
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ; C23C / ;
U.S. Cl.
CPC ...
505-1 ; 20419224 ; 427 62 ; 505730 ; 505731 ; 505732 ;
Abstract
In order to prepare a good quality crystalline thin film of compound oxide superconductor on a silicon wafer, before the thin film of compound oxide superconductor is deposited on the silicon wafer, the silicon wafer is first heated at a temperature of higher than 900.degree. C. in a high vacuum of less than 10.sup.-6 Torr, then, a thin film of ZrO.sub.2 is deposited on the silicon wafer, and finally, the thin film of ZrO.sub.2 deposited on the silicon wafer is annealed in air at a temperature of 800.degree. to 850.degree. C.