Vol. 2 No. 8 (2025): International Journal of Science and Technology
Articles

X-ray Structural Analysis and Superconducting Properties of YBa2Cu3O7–δ (YBCO) Synthesized via Solid-State Reaction

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  • Ozodjon Turayev

Published 23-06-2025

Keywords

  • High-temperature superconductor (HTS), YBCO, XRD, oxygen stoichiometry, orthorhombic structure, critical temperature.
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

How to Cite

X-ray Structural Analysis and Superconducting Properties of YBa2Cu3O7–δ (YBCO) Synthesized via Solid-State Reaction. (2025). INTERNATIONAL JOURNAL OF SCIENCE AND TECHNOLOGY, 2(8), 138–142. https://doi.org/10.70728/tech.v2.i08.047

Abstract

ThisstudypresentsacomprehensiveanalysisofthecrystalstructureandsuperconductingpropertiesofYBa2Cu3O7–δ (YBCO)synthesized
using a conventional solid-state reaction method. X-ray diffraction (XRD) analysis confirmed the dominant orthorhombic phase (space
group Pmmm) with lattice parameters a ≈ 3.82 Å, b ≈ 3.89 Å, and c ≈ 11.68 Å, indicative of high crystallinity and optimal oxygen stoichiometry (δ ≈ 0.1). The sample exhibited sharp, high-intensity peaks at 32.6°, 32.9°, and 58.3°, with minimal secondary phases Y2BaCuO5 or (BaCuO2, < 2 wt%). Crystallite sizes ranged from 170 Å to 2568 Å, with dominant sizes of 500–750 Å, suggesting well-developed grain growth. Strain analysis ( mL ηL ≈ 0.4–1.5) revealed minor microstructural distortions, likely due to oxygen vacancy ordering. The material demonstrated a critical temperature (Tk) near 92 K, consistent with fully oxygenated YBCO. To enhance performance, we recommend prolonged oxygen annealing (500°C, 24 h) and advanced characterization (Rietveld refinement, TEM) to eliminate residual impurities and optimize flux pinning. These findings underscore the potential of YBCO for high-field magnet and quantum device applications, provided phase purity and defect control are prioritized.

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