Fabrication of binary FeSe superconducting wires by novel diffusion process

Abstract

We report successful fabrication of multi- and mono-core FeSe wires with high transport critical current density Jc using a simple in-situ Fe-diffusion process based on the powder-in-tube (Fe-diffusion PIT) method. The seven-core wire showed transport Jc of as high as 1027 A/cm2 at 4.2 K. The superconducting transition temperature Tczero was observed at 10.5 K in the wire-samples, which is about 2 K higher than that of bulk FeSe. The Fe-diffusion PIT method is suitable for fabricating multi-core wires of the binary FeSe superconductors with superior properties.

14 pages, 5 figures

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Cited by in corpus (8)

• Recent advances in iron-based superconductors toward applications
• Progress in wire fabrication of iron-based superconductors
• Fabrication and transport properties of Sr0.6K0.4Fe2As2 multifilamentary superconducting wires
• Electrodeposition as a new route to synthesize superconducting FeSe
• Enhancement of superconducting properties in FeSe wires using a quenching technique
• Electrochemical deposition of FeSe on RABiTS tapes
• Synthesis, phase stability, structural and physical properties of 11-type iron chalcogenides
• Crystal structure instability of FeSe grains: Formation of non-superconducting phase at the grain surface