UV–Vis and FTIR Spectroscopic Analysis of YBCO Superconductors with Different Yttrium Concentrations

This study investigates the effect of varying yttrium content on the structural and optical properties of YBa2Cu3O7 d YBCO superconductors synthesized via the chemical extenuation method. Three compositions—Y1.00Ba2Cu3O7, Y0.90Ba2Cu3O7, and Y0.80Ba2Cu3O7—were characterized using Fourier Transform Infrared FTIR and UV Visible UV Vis spectroscopy. FTIR analysis revealed that decreasing Y content resulted in Cu–O bond weakening, increased oxygen vacancies, and pronounced lattice distortions. UV Vis results indicated that all samples exhibited strong UV absorption, with reduced Y content enhancing absorbance, transmittance, and reflectance in specific regions. The optical band gap decreased from 1.0 to 0.8 Y content samples, correlating with changes in electronic structure and defect states. Optical, dielectric, and conductivity measurements confirmed that Y content tuning significantly influences charge carrier dynamics and potential superconducting performance. These findings highlight the role of yttrium concentration in tailoring YBCO properties for superconducting and optoelectronic applications. Mozdlifa Bayin Mohamed | Mahmoud Hamid Mahmoud Hilo | Ahmed Abubaker Mohamed "UV–Vis and FTIR Spectroscopic Analysis of YBCO Superconductors with Different Yttrium Concentrations" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-9 | Issue-5 , October 2025, URL: https://www.ijtsrd.com/papers/ijtsrd97434.pdf Paper URL: https://www.ijtsrd.com/other-scientific-research-area/other/97434/uv–vis-and-ftir-spectroscopic-analysis-of-ybco-superconductors-with-different-yttrium-concentrations/mozdlifa-bayin-mohamed