Abstract
High-Tc lead-doped BSCCO superconductors (BPSCCO) were prepared from precursors of three different histories. The method, which combined three kinds of calcined powders, decreased the total sintering time for the formation of high-Tc BPSCCO superconductor phases relative to other methods based on one type of powder. The proportion of secondary phase, such as Ca22CuO3 was also reduced. As a result, the transition temperature,Tc, from the current method is higher than for the latter fabrication methods. Thec-axis parameters of BSCCO superconductors from different precursors were compared. The average X-ray particle size of each phase in the bulk sample was calculated from the Scherrer formula. Finally, the surface morphology and composition of BPSCCO were examined by SEM and energy dispersive spectrometry.
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