Published online by Cambridge University Press: 28 February 2011
Wires were fabricated from the high-Tc superconductor Bi0.7Pb0.3SrCaCu1.8Ox (Pb-BSCCO) by an extrusion process. The specimens were sintered for periods up to 14 days, and density was found to decrease with longer sintering times. Rf surface resistance data revealed that the onset of superconductivity occurred at 105 K and that the transition was very broad.