Effect of the Ball-Milling Technique on the Transport Current Density of Polycrystalline Superconductor YBa 2 Cu 3 O y -Pinning Mechanism

Hannachi, E.; Hamrita, A.; Slimani, Y.; Salem, M. K.; Zouaoui, M.; Salem, M. Ben; Azzouz, F. Ben

doi:10.1007/s10948-014-2746-2

Cited by 17 publications

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“…It is well known that, superconducting materials are experimental conditions dependent, as reported by Hannachi et al [3] who investigated the effect of the ball-milling process on the flux-pinning mechanisms of bulk YBCO, embedded with nanoparticles of Y-deficient Y-123, and generated by a planetary ball milling. They deduced that, the values of Jc's and flux pinning mechanisms are affected sharply by the experimental treatments whether the investigated samples were milled or un-milled.…”

Section: Introductionmentioning

confidence: 99%

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

2021

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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.

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Section: Introductionmentioning

confidence: 99%