Critical current density enhancement in YBa2Cu3O7−x-silver composite superconductor

Crystal Structure and Characterization of Pure and Ag‐Doped (La1−xYx)2Ba2CaCu5Oz (0≤x≤0.5) Superconductors

“…In the case of Ag‐doped samples, the diamagnetic transition temperature varies from 61 to 75 K. The Ag‐doped samples exhibit a relatively sharp superconducting transition. Such an increase in T c with Ag doping in other high T c superconductors has been reported 12,14 . This can be attributed to improvement in intergranular coupling and homogeneous oxygenation in Ag‐doped materials.…”

“…Such an increase in T c with Ag doping in other high T c superconductors has been reported. 12,14 This can be attributed to improvement in intergranular coupling and homogeneous oxygenation in Ag-doped materials. The role of Ag in introducing oxygen was also reported in manganites.…”

“…There are several reports on the addition of Ag in different weight percentages to improve the superconducting properties of high‐ T c superconductors. In a YBa 2 Cu 3 O 7 superconductor, Kozlowski et al 12 . observed maximum T c and bulk critical current density J C , for 5 wt% of Ag‐doped sample.…”

“…There are several reports on the addition of Ag in different weight percentages to improve the superconducting properties of high-T c superconductors. In a YBa 2 Cu 3 O 7 superconductor, Kozlowski et al 12 observed maximum T c and bulk critical current density J C , for 5 wt% of Agdoped sample. Such an increase in J C was also reported by Fan et al 13 Similarly, in Bi-Sr-Ca-Cu-O superconductors, an increase in T c and/or J C has been reported by several authors by Ag doping.…”

Effect of low-temperature treatment and subsequent high-temperature annealing on the critical current density of YBa2Cu3O y

“…Before the treatment at T ≥ 920°C, 10 wt % Ag were added to some samples in order to improve intergrain coupling. Besides, the non superconducting particles of silver may act as centers of pinning of magnetic vortices [8,9]. The critical current density was measured by the pulsed technique at T = 77 K in fields of up to ~2 T [4].…”