Improved transport critical current in Ag and Pb co-doped Ba xK 1xFe 2As 2 superconducting tapes

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

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Fe-clad Ba xK 1xFe 2As 2 superconducting tapes were fabricated by the ex situ powder-in-tube method combined with a short high-temperature annealing technique. The effects of annealing time and different dopants on the transport properties of Ba xK 1xFe 2As 2 tapes were systematically studied. By co-doping with Ag and Pb, the transport critical current densities J c of Ba xK 1xFe 2As 2 tapes were significantly improved in the whole field region and the highest transport J c was up to 1.4×10 4Acm 2 (I c=100A) at 4.2K in self-field. It is proposed that the superior J c values in the co-doped samples are due to the combined effects of Pb doping at low fields and Ag doping at high fields.

Original languageEnglish
Article number035020
JournalSuperconductor Science and Technology
Volume25
Issue number3
DOIs
Publication statusPublished - 2012 Mar

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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