Physical Properties of ( {BaSnO}_{3})_mathrm{x}/ {Cu}_{0.5} {Tl}_{0.5} {Ba}_{2} {Ca}_{2} {Cu}_{3} {O}_{10{-}delta } ( BaSnO 3 ) x / Cu 0.5 Tl 0.5 Ba 2 Ca 2 Cu 3 O 10 - δ Superconductor Composite

The influence of barium tin oxide nanoparticles addition on the structural and superconducting properties of the Cu_{0.5}Tl_{0.5}Ba₂Ca₂Cu₃O_{10{-}δ } phase, (CuTl)-1223, was studied. A different wt% of BaSnO₃, ranging from 0.00 to 1.50, were added into (CuTl)-1223 phase, and this composite was synthesized using the solid-state reaction technique. The phase formation and lattice parameters were calculated from X-ray powder diffraction measurements. The grain connectivity and surface morphology were identified using scanning electron microscope. Energy dispersive X-ray spectroscopy gave the real elemental composition of the prepared samples. Superconducting transition temperature ({T_c}) and critical current density ({J_c}) were determined from the electrical resistivity and I-V measurements, respectively. A complete study about the vibration modes of different atoms was carried out using Fourier transform infrared (FTIR) absorption spectroscopy of (BaSnO₃)_x/CuTl-1223 composite. The increase in {T_c} and {J_c} up to x=0.25 wt% is an evidence for improving the superconducting properties of (BaSnO₃)_x/CuTl-1223 composites by enhancing both the inter-grains coupling and volume fraction of the (CuTl)-1223 phase.