Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1988-02-24
1990-02-20
Weisstuch, Aaron
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
20419215, 20419217, 20419224, 505816, 505731, H01L 3900
Patent
active
049026712
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.
REFERENCES:
patent: 4316785 (1982-02-01), Suzuki et al.
Fueki Kazuo
Kawasaki Masashi
Koinuma Hideomi
Nagata Shunroh
Kawatetsu Mining Co. Ltd.
Weisstuch Aaron
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