Preparation of a superconducting Tl.sub.2 Ca.sub.2 Ba.sub.2 Cu.s

Details Preparation of a superconducting Tl.sub.2 Ca.sub.2 Ba.sub.2 Cu.s Preparation of a superconducting Tl.sub.2 Ca.sub.2 Ba.sub.2 Cu.s

1990-03-15

1992-03-17

Beck, Shrive

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505732, 505742, 427 62, 4271263, 427194, 427190, 427341, 4272481, B05D 512

Patent

active

050968815

ABSTRACT:
The present invention provides a method for making Tl-Ca-Ba-Cu-O superconductive materials in a film shape. Pursuant to the method, after placing a Ca.sub.2 Ba.sub.2 Cu.sub.3 O.sub.7 powder onto some suitable substrate, such as platinum or copper, the substrate and powder are rolled between two rollers until a desired thickness is achieved. The film can then be taken off the substrate. Thallium oxide is then evaporated on the precursor film to make superconductive films. The Tl.sub.2 O.sub.3 can be evaporated in a furnace or vacuum.

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