Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-02-17
1991-01-01
Morgenstern, Norman
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505742, 505725, 427 62, 4273722, 219429, 156603, B05D 512, C30B 108
Patent
active
049818392
ABSTRACT:
A method for producing a metal-oxidic superconductor material with a high transition temperature and an increased critical current density. The method comprises applying a layer of a metal-oxidic preliminary product comprising the components of the metal-oxidic material, with a crystal structure still having faults, to a substrate, and subsequently, forming the desired superconducting metal-oxide phase by means of a heat and oxygen treatment, where a critical current density of the layer is greater parallel to the surface of the layer than in the direction of the normal of the layer, and wherein the preliminary product is moved through a heated zone parallel to the surface of the layer at a predetermined velocity, wherein the zone has a positive maximum temperature gradient (.DELTA.T/.DELTA.x) measured in the direction of motion, of at least 5 K/mm and preferably of at least 10 to 50 K/mm.
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King Roy V.
Morgenstern Norman
Siemens Aktiengesellschaft
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