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Research Paper | Physics | India | Volume 12 Issue 7, July 2023
Microstructural Investigations & Compositional Analysis of Undoped and Pb-Doped 1112-Compounds of BSCCO System
Abstract: Undoped and Pb-doped superconducting 1112-compounds of Bi-system were prepared by solid state reaction technique. The electrical resistance versus temperature characteristics of these samples showed that the partial melting of the material was helpful in enhancing the Tc values. The doping of 1112-compound of Bi-Sr-Ca-Cu-O system with Pb, showed further higher values of Tc (on) and Tc (off). The elemental analysis of these of these samples, carried out by EDS, confirmed the presence of 2223, 2212 and 2201 phases in these samples. SEM studies of these samples depicted different kinds of surface morphological features indicating the presence of various phases. The studies indicated that although the initial stoichiometric composition taken was 1112, yet the nucleation of various phases such as high Tc phase (2223), low Tc phase (2212) and 2201 phase etc. took place and the final product, contained various phases. Microstructural investigations of these samples were carried out to study the lattice parameters, grain boundaries, twin boundaries and Moire patterns etc. High resolution images having lattice spacing 24.5 A? and 30.8 Ao were observed.
Keywords: Energy Dispersive X-ray Spectrometer, High Resolution Electron Microscopy, Microstructure, Moire fringes, Surface Morphology
Edition: Volume 12 Issue 7, July 2023,
Pages: 1381 - 1385