Improved transport critical currents in Ag and Pb co-doped BaxK1-xFe2As2 superconducting tapes

Abstract

Fe-clad BaxK1-xFe2As2 superconducting tapes were fabricated by the ex situ powder-in-tube method combined with a short high-temperature annealing technique. The effect of annealing time and different dopants on the transport properties of the BaxK1-xFe2As2 tapes were systematically studied. By co-doping with Ag and Pb, the transport critical current density Jc of BaxK1-xFe2As2 tapes was significantly improved in whole field region and the highest transport Jc was up to 1.4x10^4 A/cm^2 (Ic=100 A) at 4.2K in self field. It is proposed that the superior Jc in the co-doped samples are due to the combine effect of Pb doping at low fields and Ag doping at high fields.

22 pages, 7 figures, to be published in Supercond. Sci. Technol

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Cited by in corpus (4)

• Large transport Jc in Cu-sheathed Sr0.6K0.4Fe2As2 superconducting tape conductors
• Large transport critical currents and magneto-optical imaging of textured Sr1-xKxFe2As2 superconducting tapes
• Effect of the indium addition on the superconducting property and the impurity phase in polycrystalline SmFeAsO1-xFx
• Improvement in granularity of NdFeAsO0.8F0.2 superconductor through Ag doping