Abstract
AbstractA superconducting (Bi, Pb)2(Sr, Ca)4Cu3O2 material has been prepared by tbe oxalate coprecipitation method. The high‐Tc 110 K phase was effectively promoted by application of an intermediate grinding and pressing between the sintering heat treatments. The powder X‐ray diffraction shows the existence of single high‐Tc and high‐textured microstructures with strong (001) reflections within a short sintering time ( 18 h). The morphology of the sintered samples was examined by scanning electron microscopy (SEM). Also, the kinetics of the formation of the high‐Tc phase were investigated by the isothermal method. A possible mechanism of the formation of high‐Tc 2223 phase was proposed.
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