Optimizing the Preparation Conditions of Bi-2223 Superconducting Phase Using PbO and PbO₂

N. H. Mohammed, Ramadan Awad, A. I. Abou-Aly, I. H. Ibrahim, M. S. Hassan

Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt..

DOI: 10.4236/msa.2012.34033                

Abstract

In this work, superconducting samples of type (Bi_1.8Pb_0.4)Sr_1.9Ca_2.1Cu₃O_10+δ were prepared, with Pb_0.4 composed of Pb_0.2 ²⁺ and Pb_0.2⁴⁺ , at different sintering temperatures ranging from 835℃to 855℃. The prepared samples were characterized using x-ray powder diffraction (XRD), scanning electron microscope (SEM), electron dispersive spectroscopy (EDS) and differential scanning calorimetery (DSC). The superconducting properties were investigated using electrical resistivity and transport critical current density. Our results showed that the sample prepared at sintering temperature 845?C has the optimum value of superconducting transition temperature T_c and transport critical current density J_c.

Keywords

High-Temperature Superconductors; XRD; DSC; Transport Critical Current Density

Conflicts of Interest

The authors declare no conflicts of interest.

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