Abstract
We compare the superconducting properties and flux pinning characteristics between YBa2Cu3O7−δ (called Y-123) and Y3Ba5Cu8O18±δ (called Y-358) compounds. Both samples were synthesized through the solid-state reaction. The samples were examined by X-ray diffraction, and scanning electron microscope coupled with energy dispersive spectrometry. The critical current densities of the prepared samples were investigated using current–voltage, magnetization measurements and ac-susceptibility. It is demonstrated that the Y-358 exhibits better superconducting and pinning properties than the Y-123 one. This may be ascribed to the layered structure and the occurrence of a greater number of insulating layers between the CuO2 planes that act as effective pinning sites and consequently conduce to a better fundamental pinning capacity in Y-358.
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Imam Abdulrahman Bin Faisal University is acknowledged for their financial support through the Project Number 2017-529-IRMC.
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Slimani, Y., Hannachi, E., Ben Salem, M.K. et al. Comparative study of electrical transport and magnetic measurements of Y3Ba5Cu8O18±δ and YBa2Cu3O7−δ compounds: intragranular and intergranular superconducting properties. Appl. Phys. A 124, 91 (2018). https://doi.org/10.1007/s00339-017-1547-4
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DOI: https://doi.org/10.1007/s00339-017-1547-4