High T/sub c/ superconducting thin films prepared by flash evaporation

Superconducting thin films of Y-Ba-Cu-O and Bi-Ca-Sr-Cu-O were prepared by the flash evaporation technique. The flash evaporation method evaporates multi-elements instantly with different evaporation temperatures. These films had critical temperatures T/sub c/ (zero resistance) of 78 K (unannealed Y-Ba-Cu-O) and 73 K (annealed Bi-Ca-Sr-Cu-O). The thicknesses of these films were from 200 to 600 nm.<
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