Publication Details
Abstract
This research aims to study the effect of adding aluminum oxide (Al₂O₃) on the structural and electrical properties of the compound (Bi₂Ca₂Ba₂) ₁₋ₓAl₂O₃Cu₃O₁₀₊δ. The samples were prepared using the solid-state reaction technique with varying ratios of Al₂O₃, followed by sintering and annealing processes under controlled conditions. The structure was analyzed using X-ray diffraction (XRD) to determine the phases and lattice constants, in addition to electrical resistivity measurements to determine the superconducting transition temperature (Tc). The results showed that adding Al₂O₃ affects the phase purity and improves the magnetic flux pinning centers, with a slight modification in the lattice constants, while the optimal concentrations contributed to improving the transition sharpness without a significant reduction in Tc. These results confirm the importance of precise control of the structural composition to improve the functional performance of high-temperature superconductors.