Nano-platinum additives ball milled with hollow carbon spheres for mechanical tensile promotion of 2212- Pb1+x(HCNs/Pt)xBiSr2CaCu2O8 superconductor

Abstract

In the present investigations platinum nano-particles in range of ≤ 20 nm were carefully ball milled with nominal composition of hollow carbon nano-spheres to apply as a softener ductile mechanical tensile promoter for 2212-PBSCCO superconductor. The samples with general formula Pb1+x(HCNs/Pt)xBiSr2CaCu2O8 where (x = 0.1,0.2 and 0.4 mol) were carefully synthesized via solid state reaction route with a certain thermal treatment cycle involving, annealing step at 865 °C for 20 h. The mechanical tensile strength measurements for the sample with x = 0.4 mol from CNs/Pt achieved maximum mechanical tensile strength value of 45.77 MPa., with promotion ratio ~ 21.08% in contrast with pure-sample x = 0 with mechanical tensile of 37.8 MPa. Furthermore, the additions of (HCNs/Pt) does not damage the whole superconductivity on the investigated range (0 ≤ x ≤ 0.4 mol). Results indicated that, the additions of (HCNs/Pt) had a remarkable, suppressing the Tc-values to Tc-offset = 62.2 K for the sample with maximum additive ratio x = 0.4 mol.