MATERIAL CHARACTERIZATION OF SUPERCONDUCTING NANO CRYSTALLINE CERAMIC YSrBiCuO BY THERMAL TECHNIQUES

The nano-sized ceramic superconducting material YSBCO having perovskite structure was prepared according to the chemical formula by the thermo chemical solid state reaction technique using a high-energy ball milling process through mechanically assisted synthesis. It was characterized by XRD, SEM and EDX. Here the authours studied the thermal characterization using TGA, DTA and DSC

INVESTIGATION OF THE ABSORPTION COEFFICIENT, REFRACTIVE INDEX, ENERGY BAND GAP, DISPERSION ENERGY AND URBACH ENERGY OF NANOCRYSTALLINE CERAMIC SUPERCONDUCTOR YSRBICUO

In this era of High temperature superconductors (HTS), having a lot of applications like high -voltage generator, Ceramic superconductor yttrium strontium bismuth copper oxide (YSBCO) was synthesized thermo chemically by solid state method at different treating temperatures. A characteristic feature of all solid-state reactions is that they involve the formation of product phase(s) at the interfaces of the reactants. UV-VIS analysis of the sample was carried out. Tunable band gaps can be obtained by varying annealing temperatures. The optical constants of refractive index, normal-incidence reflectivity, extinction coefficient, and absorption coefficient showed systematic variation with temperature. The dispersion of refractive index was analyzed by the Wemple-Di Domenico singleoscillator model. Urbach energy was elucidated from the raw data