Lattice Imaging of Superconducting Phases Formed in Undoped and Pb-Doped 1112-BSCCO Compounds

Nigvendra Kumar Sharma

Abstract: In the present paper the author has reported the systematic study on the preparation of undoped and Pb-doped BSCCO superconductors having starting stoichiometric composition 1112 and prepared by the solid-state reaction technique. The efforts were made to correlate the variations in the preparatory conditions with temperatures dependance of electrical resistance of these samples. The Transmission Electron Microscopy and Electron Diffraction techniques were used study the lattice parameters, grain boundaries, dislocations, Moire patterns and microstructure of these samples. The efforts were made to identify the various superconducting phases formed in these samples through lattice imaging and electron diffraction techniques. The analysis of these results is also being reported in this paper.

Keywords: Solid State Reaction, Transmission Electron Microscopy, Lattice Imaging Technique, Grain Boundaries, Moire Patterns