Abstract
The effects of improved materials processing on single Bi−O layered cuprates in the (Bi, Pb)−Sr−(Ca, Y)−Cu−O system have been investigatged. For Bi-1212 we have improvedT c to 102 K. The bulk nature of superconductivity is confirmed by the presence of superconducting volume fractions (χ ZFC) around 30–40%. The critical current density is 2×106 Acm−2 at 5 K and 0 T. Moreover, indications for the presence of a second phase probably Bi-1223 with a transition to superconductivity in the range of 115–150 K have been found.
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Zoller, P., Glaser, J., Ehmann, A. et al. Superconductivity and processing of single Bi−O layered cuprates in the (Bi, Pb)−Sr−(Ca, Y)−Cu−O system. Z. Physik B - Condensed Matter 96, 505–509 (1995). https://doi.org/10.1007/BF01313848
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DOI: https://doi.org/10.1007/BF01313848