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US 5,106,828 AGranted
Method for fabricating superconductors by sol-gel process
AssigneeNorth American Philips Corporation
InventorsRameshwar N. Bhargava, William N. Osborne, Walter K. Zwicker
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Abstract
Superconducting oxides in the A, B, Cu oxide ternary system, where A is yttrium or a rare earth and B is an alkaline earth, are formed as thin films on a substrate by a sol-gel technique.
Claims15
A method for producing a copper oxide based superconducting oxide composition, the method comprising:
- 1) forming a sol from a solution of hydrolyzable alkoxides in a volatile non-polar solvent, the alkoxides being precursors of the desired oxide constituents and being present in the stoichiometric proportions needed to yield the desired superconducting composition,
- 2) gelling the sol by hydrolysis and polymerization of the alkoxides, and
- 3) firing the gel in an oxygen-containing atmosphere to convert the gel to a crystalline superconducting oxide.
Dependencies are inferred from the claim text.