The effect of cadmium sulfide (CdS) nanoparticles synthesized by hydrothermal method on the structural properties and on the excess conductivity of yttrium-based compound (YBa₂Cu₃O_y) and bismuth-based compound ((Bi,Pb)₂Sr₂Ca₂Cu₃O_δ) was reported. The electrical resistivity versus temperature, \(\rho (T)\), in the paraconductive region, was analyzed using the Aslamazov–Larkin model. Different fluctuation regions indicated by the short-wave region, mean-field region, and critical region were identified. The coherence length \({\xi }_{c}(0)\), the effective layer thickness \(d\), the penetration depth \({\lambda }_{c}(0)\), the lower and upper critical magnetic fields, \({B}_{c1}\left(0\right)\) and \({B}_{c2}\left(0\right)\), the critical current densities \({J}_{c}\left(0\right)\), and numerous other superconducting parameters are determined. It was found that the intrinsic properties are much more improved in the CdS-added samples, which suggests that the addition of CdS nanoparticles in the superconducting matrix leads to the enhancement of the grain connectivity, the formation of strong pinning centers contributing to the reduction of magnetic vortex motion and therefore, the improvement of the conduction properties in the yttrium- and bismuth-based materials.

水热法合成硫化镉（CdS）纳米粒子对钇基化合物（YBa ₂ Cu ₃ O _y）和铋基化合物（（Bi，Pb）₂ Sr ₂ Ca的结构性能和过量电导率的影响₂铜₃ ö _δ报道）。使用Aslamazov–Larkin模型分析了顺导电区域的电阻率与温度的关系，\（\ rho（T）\）。确定了由短波区域，平均场区域和临界区域指示的不同波动区域。相干长度\（{{xi} _ {c}（0）\），有效层厚度\（d \），穿透深度\（{\ lambda} _ {c}（0）\），上下临界磁场\（{B} _ {c1} \ left（0 \ right）\ ）和\（{B} _ {c2} \ left（0 \ right）\），临界电流密度\（{J} _ {c} \ left（0 \ right）\）和许多其他超导参数是决心。发现添加CdS的样品的内在性能得到了更大的改善，这表明在超导基体中添加CdS纳米颗粒可增强晶粒的连通性，形成牢固的钉扎中心，从而有助于降低CdS。磁涡旋运动，因此提高了钇基和铋基材料的导电性能。