TITLE

High transport critical current densities in textured Fe-sheathed Sr1-xKxFe2As2+Sn superconducting tapes

AUTHOR(S)
Gao, Zhaoshun; Wang, Lei; Yao, Chao; Qi, Yanpeng; Wang, Chunlei; Zhang, Xianping; Wang, Dongliang; Wang, Chengduo; Ma, Yanwei
PUB. DATE
December 2011
SOURCE
Applied Physics Letters;12/12/2011, Vol. 99 Issue 24, p242506
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the realization of grain alignment in Sn-added Sr1-xKxFe2As2 superconducting tapes with Fe sheath prepared by ex-situ powder-in-tube method. At 4.2 K, high transport critical current densities Jc of 2.5 × 104 A/cm2 (Ic = 180 A) in self-field and 3.5 × 103 A/cm2 (Ic = 25.5 A) in 10 T have been measured. These values are the highest ever reported so far for Fe-based superconducting wires and tapes. We believe the superior Jc in our tape samples are due to well textured grains and strengthened intergrain coupling achieved by Sn addition. Our results demonstrated an encouraging prospect for application of iron based superconductors.
ACCESSION #
69734152

 

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