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. 20, 1990
Filed:
Feb. 24, 1988
Hideomi Koinuma, Tokyo, JP;
Kazuo Fueki, Tokyo, JP;
Masashi Kawasaki, Tokyo, JP;
Shunroh Nagata, Tokyo, JP;
Kawatetsu Mining Co. Ltd., Tokyo, JP;
Abstract
The present invention provides a manufacturing method of a conductive or superconductive thin film of mixed oxide as an easier way to apply the mixed oxide type superconductive materials to electronic devices, etc. The manufacturing method of the present invention comprises using a mixed oxide composition showing conductivity or superconductivity as a target material and sputtering it onto a substrate to form a thin film. Examples of the mixed oxide compositions showing conductivity or superconductivity and to be used as the target material in the present invention are mixed oxides consisting of lanthanoid, alkali earth metal and copper as main components, particularly, a mixed oxide consisting essentially of La-Sr-Cu-O, La-Ba-Cu-O, La-Ca-Cu-O etc. or mixtures thereof, materials containing a small quantity of other metal oxide(s), or mixed oxides mainly consisting of Yb-Ba-Cu-O, Er-Ba-Cu-O, Ho-Ba-Cu-O, Tm-Ba-Cu-O or mixtures thereof.