Author(s)

Mohamed Mohamed Ibrahim, Nassar Mahmoud Megahid, Mostafa Mohamed Abd El-Raheem, Sayed Mohammed Khalil

Department of Physics, Faculty of Science, Sohag University, Sohag, Egypt.
Department of Physics, Faculty of Science, Taif University, Taif, KSA.
Department of Physics, Faculty of Science, Ummulqura University, Mekka, KSA.

Powder compacts of the system Bi_2–xPb_xSr₂Ca₂Cu₃O_y with 0 ≤ x ≤ 0.5 molar ratio using both techniques; isothermal hot pressing and the solid state reaction (sintering). The XRD of the hot pressed powder compacts of the nominal compositions Bi_2–xPb_xSr₂Ca₂Cu₃O_y showed 2212 and 2223 phases. The resistivity temperature variations belonging to the composition Bi_1.8Pb_0.2Sr₂Ca₂Cu₃O_y showed metal-superconducting transition at T_ons = 143 K for the annealed sample for 24 h. The annealed nominal composition Bi_1.5Pb_0.5Sr₂Ca₂Cu₃O_y for 18 h showed metal to superconducting transition at 80 K.

Electrical Resistivity; Superconductors; Hot Pressing; Sintering

M. Mohamed Ibrahim, N. Mahmoud Megahid, M. Mohamed Abd El-Raheem and S. Mohammed Khalil, "Preparation and Characterization of Hot-Pressed and Sintered BiPbSrCaCuO Superconductor," New Journal of Glass and Ceramics, Vol. 2 No. 2, 2012, pp. 75-84. doi: 10.4236/njgc.2012.22011.