This invention provides a method for making Tl-Ca-Ba-Cu-O superconductive materials in a film shape. After placing a Ca2Ba2Cu3O7 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 Tl2O3 can be evaporated in a furnace or vacuum.
Electrical Engineering; Physics
US5096881; AU650005 (B2)
The University of Arkansas (Little Rock, AR)
Shams, Qamar A.; Hermann, Allen M.; and Sheng, Zhengzhi, "Preparation of a superconducting Tl2Ca2Ba2Cu3Ox thick film by processing a rolled Ca-Ba-Cu-O film in Tl2O3 vapor" (1992). Patents Granted. 244.