Abstract
Infield superconducting properties of {(Ag)x/CuTl-1223}; (x = 0, 0.5, 1.0, 2.0 and 4.0wt %) nanoparticles-superconductor composites were investigated under different applied magnetic field up to H = 8T. The increase in critical temperature {Tc(0)} and decrease in normal state resistivity (ρo) were observed with increasing contents of Ag nanoparticles in CuTl-1223 superconducting matrix. The value of Tc°nset (K) remained almost unaffected by applying external magnetic field, but a decreasing trend in Tc (0) was observed by increasing the value of external applied magnetic field. The transition region below Tc°nset (K) showed Arrhenius behavior due to thermally activated flow of magnetic vortices. Enhancement in flux flow activation energy (Uo) and suppression in transition width (ΔT) of CuTl-1223 phase with addition of Ag nanoparticles showed the improvement in flux pinning strength of superconductor.
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More From: Progress in Natural Science: Materials International
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