The effect of Sb and Pb doping on the critical current density and microstructure of the Bi1.6PbxSbySr2Ca2Cu3Oz superconductor

Mousavi Ghahfarokhi, Seyed Ebrahim; Zargar Shoushtari, Morteza

doi:10.52547/jmrph.2.1.73

The effect of Sb and Pb doping on the critical current density and microstructure of the Bi1.6PbxSbySr2Ca2Cu3Oz superconductor

Authors

seyed ebrahim mousavi ghahfarokhi

morteza zargar shoushtari

10.52547/jmrph.2.1.73

Abstract

In this paper, the effect of Sb and Pb doping on the critical current density and microstructure of Bi_1.6Pb_xSb_ySr₂Ca₂Cu₃O_z (BPSSCCO) were studied. The BPSSCCO superconductor was made by a solid state reaction method. The superconductivity properties of Pb- and Sb-doped Bi-based superconductor, such as critical current density, flux pinning energy and microstructure, have been investigated. In order to study the effect of Sb and Pb on the critical current density of the samples, the V-J curves were measured at 77 K temperature. The critical current density of the Sb-doped samples at 77 K temperature increases when the amount of Sb is increased. In addition, for all the samples, the relationship between the current and voltage in the mixed state region is found to follow the model relationship of V = aI^b.

Keywords

Critical current density

Flux pining energy

SEM

XRD