Infield superconducting properties of nano-sized Ag added Cu0.5Tl0.5Ba2Ca2Cu3O10−δ

Progress in Natural Science: Materials International

Iftikhar Hussain Gul¹  M.W. Rabbani²  Liaqat Ali²  M. Mumtaz² 

[1] Department of Material s Engineering (ME), Thermal Transport Laboratory (TTL), School of Chemical and Materials Engineering (SCME), National University of Science and Technology (NUST), H-12 Islamabad, Pakistan;Materials Research Laboratory, Department of Physics, FBAS, International Islamic University (IIU), Islamabad 44000, Pakistan;

关键词: Ag)x/CuTl-1223 composites;    Activation energy;    Transition width;    Flux pinning;    Critical field;   

DOI  :  10.1016/j.pnsc.2017.06.011

来源: DOAJ

【 摘 要 】

Infield superconducting properties of {(Ag)x/CuTl-1223}; (x = 0, 0.5, 1.0, 2.0 and 4.0 wt %) nanoparticles-superconductor composites were investigated under different applied magnetic field up to H = 8 T. 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.

【 授权许可】

Unknown