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The trend of flux pinning in the melt-powder-melt-growth (MPMG) process was examined. This involved the comparison of the magnetic hysteresis and magnetic relaxation of three MPMG samples having different nominal concentrations of 211 inclusions. A weak field dependence of critical current and an enhanced pinning strength were exhibited by the samples prepared by the MPMG process.

Silver-clad monofilament (Bi, Pb)SrCaCuO-2223 superconducting tapes manufactured by the oxide-powder-in-tube process were measured at magnetic fields from O T to 7 T and a temperature range of 7-75 K. The measurements obtained the tapes's transport critical current densities and magnetization currents at fields parallel and perpendicular to the sample's plane. These also provided information on the magnetic relaxation and flux pinning potentials.

The fabrication and characterization of silver-clad TlBa2Ca2Cu3O(8+x) (Tl-1223) films is presented. It details the procedures performed to synthesize superconductors from thalliated precursor powders. It also presents the measurements of transport and magnetization critical current densities which reveal its suitability for high-field and high-temperature applications.