Transport critical current density of Sr0.6K0.4Fe2As2/Ag superconducting tapes processed by flat rolling and uniaxial pressing

Chao Yao, He Lin, Xianping Zhang, Chiheng Dong, Dongliang Wang, Qianjun Zhang, Yanwei Ma, Satoshi Awaji, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Ag-sheathed Sr0.6K0.4Fe2As2 superconducting tapes with various thicknesses were produced by flat rolling and cold uniaxial pressing based on an ex-situ powder-in-tube method. The transport critical current density (Jc) for both rolled and pressed tapes was found to increase with the decrease of tape thickness. Compared with flat rolling, cold pressing can further enhance the transport Jcof Sr0.6K0.4Fe2As2 tapes. A transport Jc as high as 4.8 × 104 A/cm2 at 4.2 K and 10 T was achieved by pressing Sr0.6K0.4Fe2As2 tapes at about 1.0 GPa. This superior transport Jc in the pressed tapes can be ascribed to improved mass density and grain texture of Sr0.6K0.4Fe2As2 superconducting cores.

Original languageEnglish
Article number6937118
JournalIEEE Transactions on Applied Superconductivity
Volume25
Issue number3
DOIs
Publication statusPublished - 2015 Jun 1

Keywords

  • Ironbased superconductor
  • critical current density
  • pressing
  • rolling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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