Investigation of microhardness and superconducting parameters of CNTs blended YBCO superconductor

摘要: Abstract Here we report the effect of CNTs addition on microhardness and superconducting properties YBa 2 Cu 3 O 7-δ (YBCO) high-temperature superconductor. All composite samples exhibit orthorhombic structure, maintain single phase to belong P mmm space group as evidence from Rietveld refinement analysis. From FESEM micrographs, for all extended rods like structure is observed. The number ( H V ) enhances non-linearly by application load 0 3 N, beyond which curve reaches a saturation limit. As gradually increases under substitution revealed that has resulted significant property YBCO Different models Meyer's law, Hays-Kendall approach elastic/plastic deformation model are utilized examine Finally proportional specimen resistance most efficient describe doped samples. transition temperature T C obtained resistivity vs. measurement AC susceptibility measurement. both measurements, it obvious with up 0.5 wt % then decreases. For sample value nearly 96 K. matrix creates artificial pinning centers inside volume fraction, hence observed critical current density more than pristine YBCO. maximum J c 1.8 times pure Utilizing Zeldov characteristics potential energy calculated response very similar CNTs.