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Abstract
This work describes the electromechanical behaviour of iron- and silver-sheathed ex situ Sr0.6Ka0.4Fe2As2 (Sr-122) tape superconductors. Free-standing Sr-122 tapes were stressed by axial tension at 4.2 K under external fields at 5–6 T, and critical currents have been simultaneously measured. An attempt to reinforce Sr-122/Ag mechanically was done by simple soldering of two stainless steel strips of 40 μm to both sides of the tape. The obtained results are compared with the electromechanical property of MgB2/Fe. The mechanical limits of Sr-122/Fe and Sr-122/Ag regarding possible high field applications are also discussed.
Published Version
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