Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1987-12-22
1990-04-17
Morgenstern, Norman
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
427 62, 427 63, 4271263, 427226, B05D 302
Patent
active
049180517
ABSTRACT:
Superconducting thin films of YBa.sub.2 Cu.sub.4 O.sub.7, having a superconducting transition temperature of 90.degree. K., are produced in a non-vacuum environment using Mettalo-Organic Deposition techniques. An ink comprising the neodecanoates of yttrium, barium, and copper is formed and spun on a single crystal substrate of strontium titanate. The ink is dried in an air environment, heated in an air environment at a temperature sufficient to decompose the neodecanoates, about 500.degree. C., and then heated again to promote recrystallization and grain growth of the remaining metal oxides. The resulting thin film exhibits superconductive characteristics at about 90.degree. K.
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Hamdi Aboud H.
Mantese Joseph V.
Micheli Adolph L.
General Motors Corporation
King Roy V.
Morgenstern Norman
Wallace Robert J.
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