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Study on the Physical and Electrical Properties of Bi2-?Zn?Sr2Ca2Cu 3O10+y Glass-Ceramic Superconductors
(2002) Aksan M.A.; Yakmci M.E.; Balci Y.
We have fabricated a series of glass-ceramic (Bi2-?Zn?) Sr2Ca2Cu3O10+y, where ? = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0, and investigated the effect of Zn ions on the glass formation, crystallization, thermal, electrical, and on the magnetic properties of the BSCCO-2223 superconductor system. The structural symmetry was found to be tetragonal in all the substitution levels. The best electrical performance was obtained from the ? = 0 sample, the Tc and Tzero was obtained at 110 K and 107 K, respectively. The Jc values of the samples were determined using the magnetization hysteresis and Bean's model. The crystallization kinetics were investigated using nonisothermal models of Augis-Bennett. The calculated activation energy, Ea, of the system was found to be in the range of 258-336 kJ/mol. ©2002 Plenum Publishing Corporation.