Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-10-26
1991-06-04
Morgenstern, Norman
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505734, 505725, 427 63, 427 62, 427 531, 427 541, 427 431, 427226, 427299, 4274192, B05D 306, B05D 512
Patent
active
050213989
ABSTRACT:
The present invention describes a method to produce a patterned superconducting solid preferably as a thin film. Unsaturated organic acid metal salts of suitable metals are dissolved in an organic solvent, mixed thoroughly and cast as a film on a substrate. The concentration of these organic carboxylate metal salts is adjusted such that a superconducting metal oxide ratio is obtained upon pyrolysis at temperatures up to 1000.degree. C. with subsequent slow cooling. A pattern (mask) is placed over the film and the film is irradiated to polymerize and crosslink the exposed portions. The unpolymerized and uncrosslinked portions are removed usually by using selective solvents or solvent mixtures. The solid remaining is heated in oxygen or air to about 1000.degree. C., which removes the organic portions and leaves metal oxide residue. The metal oxides are then cooled slowly and annealed to produce the patterned metal oxide superconducting materials. The articles of manufacture produced are useful in fabricating devices requiring superconducting thin films in addition to other uses.
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Narang Subhash C.
Sharma Suniti K.
Ventura Susanna C.
AMP Incorporated
King Roy V.
Morgenstern Norman
Noll William B.
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