In this study, the effect of Ba substitution for Sr in the Bi-Pb-Sr-Ca-Cu-O (BPSCCO) system was investigated. The Bi1.6Pb0.4Sr2-xBaxCa2Cu3Oy superconductor with   0.0, 0.05, 0.1, 0.15, 0.2, 0.25 and 0.3 at annealing times of 16, 32, 48 and 64 hour was made by the sol-gel method. In order to study the microstructure of samples, SEM images and X-ray diffraction (XRD) was performed. The crystal la...

The structural properties of  high Tc superconductor by XRD, SEM and EDX, resistivity, critical electrical current density and oxygen content measurement have ben studied. The sample of  is prepared by solid state reaction, with two different thermal conditions. The XRD results have shown the formation of pure phase of . The oxygen content measurement for two samples by Iodometric titration giv...

In this paper Sb2O3 nanoparticles are synthesized by solution method. The effect of these nanoparticles on the Bi-2223 superconductor properties has been investigated. The critical temperature, critical current density and activation energy were measured by the standard four-probe method. Magnetic properties of the samples were measured by using the AC magnetic susceptibility. The microstructur...

In this paper, β-PbO nanoparticles were prepared by microwave irradiation. Then, the PbO nanoparticles with size of 32 nm were doped in the Bi2-xPbxSr2Ca2Cu4Oy superconductor with x = 0.0, 0.2, 0.4 and 0.6. The samples were synthesized by the standard solid state reaction method. The structural properties, microstructure and morphology of the samples have been studied by XRD and SEM. After synt...