High transport critical current densities in textured Fe-sheathed Sr 1-xK xFe 2As 2+Sn superconducting tapes Article

Gao, Z, Wang, L, Yao, C et al. (2011). High transport critical current densities in textured Fe-sheathed Sr 1-xK xFe 2As 2+Sn superconducting tapes . 99(24), 10.1063/1.3671109



cited authors

  • Gao, Z; Wang, L; Yao, C; Qi, Y; Wang, C; Zhang, X; Wang, D; Wang, C; Ma, Y

fiu authors

abstract

  • We report the realization of grain alignment in Sn-added Sr 1-xK xFe 2As 2 superconducting tapes with Fe sheath prepared by ex-situ powder-in-tube method. At 4.2 K, high transport critical current densities J c of 2.5 × 10 4A/cm 2 (I c = 180 A) in self-field and 3.5 × 10 3A/cm 2 (I c = 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 J c 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. © 2011 American Institute of Physics.

publication date

  • December 12, 2011

Digital Object Identifier (DOI)

volume

  • 99

issue

  • 24