Synthesis of Yttrium Barium Copper Oxide and Optimizing for Superconductivity Application using UV-Vis Spectroscopy

Abstract

In this thesis three samples of Yttrium Barium Copper Oxide (YBCO) were prepared and characterized via UV-Vis spectroscopy to determine their optical properties. It’s importance brake out as it acts in the scope of superconductor, then its characteristics was studied using UV-Vis device, the samples were composited by different percentage (100, 90, and 80) % of Yttrium oxide which prepared with the chemical extenuation method. The optical properties of each sample (the absorbance, absorption coefficient, transmittance, reflectance and energy gap) had been studied .results obtained showed that all the optical properties of the synthesized compound acts in the range of UV only, and reflectance increased with decreasing of yttrium oxide percentage, while transmittance and reflectance increased with the deceasing of yttrium oxide percentage in the sample The energy gap (0.0035 eV to 0.0045 eV) obtained to match with the specification of superconductor’s energy gap, which is probably a very good results, that is for superconducting material, must have a very small energy gap.