Elaboration of Tl0.5Pb0.5Sr2CaCu2Ox Superconducting Phases By an Ultrasonic Spray–Pyrolysis Process
1998
Abstract An ultrasonic spray–pyrolysis process has been used to prepare an homogeneous T l0.5 Pb 0.5 Sr 2 CaCu 2 O x high-temperature superconductor. Depending on experimental conditions, the grain morphology changes from platelet to cauliflower-like, contrary to the three copper layers series. The (Tl/Pb)–Sr–1212 phase has remarkable stability and does not decomposed before melting. The critical temperature onset, about 80 K, is similar to that for samples prepared by the usual sintering methods.
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