Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1990-06-27
1992-04-21
Lieberman, Paul
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505725, 505778, 423130, 501123, H01B 1200
Patent
active
051068249
ABSTRACT:
Disclosed is a method of manufacturing an oxide superconductor containing at least an alkaline earth metal and copper. This method comprises the steps of heating a material substance containing elements constituting the oxide superconductor, in an atmosphere having an oxygen partial pressure of at most 50 Torr at a temperature ranging from 500.degree. C. to 1000.degree. C., and then heating the material substance in an oxygen-containing atmosphere. Also disclosed herein is a method of manufacturing composite oxide powder which is the precursor of the oxide superconductor. This method comprises the steps of heating the material substance in an atmosphere having an oxygen partial pressure of at most 50 Torr at a temperature ranging from 500.degree. C. to 1000.degree. C., and crushing the material substance into powder.
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Enomoto Noritsugu
Shiga Shoji
Tanaka Yasuzo
Uno Naoki
Lieberman Paul
Swope Bradley A.
The Furukawa Electric Co. Ltd.
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