Abstract
In an attempt to produce superconductive films of large area, a study was made on the preparation of the films through laser post-treatment of plasma-sprayed oxide ceramic films. The ceramic powders of Bi-Sr-Ca-Cu-O and Y-Ba-Cu-O systems were used as raw materials. Each ceramic powder was sprayed onto a stainless steel substrate followed by CO2 laser beam irradiation with oxygen gas flow to remodify the composition and provide superconductive crystals on the film. The results showed that laser post-treatment can recover superconductive crystals on both films and can provide the transition temperatures Tc(on) on both systems and the critical temperature Tc(end) on the Bi-Sr-Ca-Cu-O system.
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