Enhanced transport critical current density in Sn-added SmFeAsO1-xF x tapes prepared by the PIT method

Qianjun Zhang, Xianping Zhang, Chao Yao, He Huang, Dongliang Wang, Chiheng Dong, Yanwei Ma, Hiraku Ogino, Satoshi Awaji

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

SmFeAsO1-xFx tapes were fabricated by the ex situ powder-in-tube (PIT) method followed by a low temperature (300 °C) ordinary sintering process. The purity of the superconducting core of the tapes has been largely improved. The reduction of SmAs and FeAs impurities has significantly enhanced the transport J c of the SmFeAsO1-xFx tapes. At 4.2 K, the transport J c values of the SmFeAsO1-xFx tapes have achieved 1.8 ×104 A cm-2 at 0.6 T and 2.9 ×102 A cm-2 at 10 T, which is the highest among 1111 type wires and tapes. Similar field dependences of transport J c and magnetic J c imply improved grain connectivity in the superconducting cores.

Original languageEnglish
Article number065004
JournalSuperconductor Science and Technology
Volume30
Issue number6
DOIs
Publication statusPublished - 2017 May 15

Keywords

  • 1111 type
  • SmOFeAs
  • iron-based superconductors
  • pnictides
  • powder-in-tube method
  • transport critical current density
  • wires and tapes

ASJC Scopus subject areas

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

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