Patent ID: 8227019

Claim:
A process for producing long lengths of a layered superconductor comprising: coating a buffered metal substrate tape with metalorganic precursors of REBa 2 Cu 3 O 7 where RE is a rare earth to form a coated tape, wherein coating is carried out during the process of metalorganic deposition (MOD); translating the coated tape through a precursor conversion zone in a process chamber at a rate of at least about 10 meters per hour; introducing oxygen and water vapor through a showerhead into the precursor conversion zone while translating the coated tape; heating the coated tape to a temperature in the range between about 700° C. to about 850° C. within the precursor conversion zone; and reacting the water vapor, oxygen, and the metalorganic precursors of REBa 2 Cu 3 O 7 to form a superconducting coating while translating the coated tape through the precursor conversion zone, where the pressure in the process chamber is in the range between about 1 Torr to about 760 Torr and where the substrate resides in the precursor conversion zone for a period of time sufficient to convert the precursors to a superconducting coating epitaxial to the buffer layer.