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arXiv · 1202.1039

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

Chao Yao·Chunlei Wang·Xianping Zhang·Lei Wang·Zhaoshun Gao·Dongliang Wang·Chengduo Wang·Yanpeng Qi·Yanwei Ma·Satoshi Awaji·Kazuo Watanabe
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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.

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Chao Yao, Chunlei Wang, Xianping Zhang, Lei Wang, Zhaoshun Gao, Dongliang Wang, Chengduo Wang, Yanpeng Qi, Yanwei Ma, Satoshi Awaji, Kazuo Watanabe. 2012-02-06. Improved transport critical currents in Ag and Pb co-doped BaxK1-xFe2As2 superconducting tapes. https://doi.org/10.1088/0953-2048%2F25%2F3%2F035020

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