Abstract
The Pechini process has been used to prepare bulk Bi(Pb)SrCaCuO superconductors by employing the polymeric citric acid/ethylene glycol (CA/G) derived precursors. With appropriate heat treatment these precursors can be converted into a pure Bi 1.5Pb 0.5Sr 2Ca 2Cu 3O x superconductor with T c in the range of 100–110 K and with good stoichiometry control and uniform grain size. The chemistry involved in the materials processing leading to the formation of the superconductor and the results of X-ray diffraction, infrared spectroscopy, thermal analysis (DTA/TGA), and SEM morphological studies obtained in our investigations on the precursors as well as the oxide superconductors are presented.
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