Fabricación y caracterización de cintas superconductoras de alta temperatura crítica.

From the superconductor compound (Bi0,8Pb0,2)2Sr2 - Ca2Cu3O10+γ (BSCCO-2223), BSCCO - 2223 superconducting tapes were prepared using the oxide power-in-tube (OPIT) method, using different thermal treatments. By submitting the tapes to high temperatures, high current densities relative to bulk material Jc ≈ 10 A/cm2 - 77 K and B = 0 T and high grain connectivity were obtained, which could be attributed to partial fusion of the compound. Morphology and composition of the packed material were studied by Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray spectroscopy (EDX) respectively, observing a composition close to nominal and good grain connectivity, responsible of their electrical properties