Abstract
The high temperature superconductors of the system Bi-Pb-Sr-Ca-Cu-O show promising properties and large scale applications can be considered. The (Bi,Pb)2Sr2Ca2Cu3O10+δ (Bi,Pb(2223)) phase is attractive because of its high superconducting temperature (110 K) and high current transport capabilities.
Simultaneous DTA/TG has proved an excellent tool for synthesizing, characterizing these high temperature superconductors, confirming phase diagrams and finding the optimal annealing temperature for Bi,Pb(2223)/Ag tapes in order to obtain high critical current densities around 30 kA cm−2 at 77 K and 0T. The identification of the main DTA peaks of measurement of different phase mixtures made it possible to observe the formation of an intermediate phase Bi,Pb(2212) during the formation of Bi,Pb(2223).
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Jeremie, A., Grasso, G. & Flükiger, R. Synthesis and characterization of high temperature superconductors. Journal of Thermal Analysis 48, 635–645 (1997). https://doi.org/10.1007/BF01979509
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DOI: https://doi.org/10.1007/BF01979509