Abstract
The effect of the initial stoichiometry variation (variation in Bi, Pb, Sr, Ca and Cu) on various structural and superconducting properties of Pb-doped Bi-based superconductor has been studied. The sample having the initial stoichiometry of (Bi1.8Pb0.4)Sr2Ca2.2Cu3O10 was found to give best structural and superconducting properties. The most important factors affectingJ c in the samples were the type of impurity phases present in the sample, their amount and distribution in the superconducting matrix. Cu-rich stoichiometry enhanced the formation of 110 K phase, but large amounts of undesirable impurities present in the samples decreasedJ c. The formation of 110 K phase and texturing of (001) planes in a sample depended on the period of heat treatment and stoichiometry.
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Simon, A., Mukherjee, P.S., Sarma, M.S. et al. Variation of structural and superconducting properties with initial stoichiometry variation in (Bi, Pb)-Sr-Ca-Cu-O bulk superconductor. J Mater Sci 29, 5059–5064 (1994). https://doi.org/10.1007/BF01151097
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DOI: https://doi.org/10.1007/BF01151097