Journal
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
Volume 18, Issue 11, Pages 1454-1459Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-2048/18/11/007
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The effects of Gd addition on the phase evolution and superconducting properties of (Bi, Pb)-2212 prepared in the bulk polycrystalline form were studied. The Gd content in the samples was varied from 0.0 to 0.5 on a general stoichiometry of Bi1.7Pb0.4Sr2.0Ca1.1Cu2.1GdxOy. Phase analysis by means of x-ray diffraction, microstructural examination by scanning electron microscopy and superconducting property studies were carried out to evaluate the relative performances of the samples. It is observed that Gd addition enhances the transition temperature (T-C) and critical current density (J(C)) of the system. Moreover no secondary phase containing Gd ions or any other cations was observed after the final stage of heat treatment.
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