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.
- Ironbased superconductor
- critical current density
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering