Abstract
In this work we have studied the pore structure and electrical transport properties of superconducting YBa2Cu3O7−y polycrystalline samples doped by the addition of different Sb2O3 concentrations, i.e. resulting in (YBa2Cu3O7−y )1−x (Sb2O3) x . The samples were prepared through the solid-state reaction method. Rietveld analyses of X-ray diffraction data were used to investigate how the lattice parameters are modified by doping. Specific superficial area measurements identified the principal characteristics of the pore structure of the samples and how these properties change with doping. The superconducting properties were studied by using zero field cooling magnetization and transport critical current measurements. The critical temperature of the samples does not depend on the doping level, but their transport critical current density strongly decreases as the Sb2O3 concentration is increased. Our experimental results suggest that for the samples studied here there is not a direct correlation between the modification by doping of both, the pore structure and the transport critical current density.
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Piumbini, C.K., Deleprani, F., Quispe-Marcatoma, J. et al. Pore Structure and Transport Properties in Bulk YBa2Cu3O7−δ Doped with Sb2O3 . J Supercond Nov Magn 25, 2315–2321 (2012). https://doi.org/10.1007/s10948-012-1658-2
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DOI: https://doi.org/10.1007/s10948-012-1658-2