Rapid Doubling of the Critical Current of YBa₂Cu₃O₇₋δ Coated Conductors for Viable High-Speed Industrial Processing
Leroux, Maxime · Kihlstrom, Karen J. · Holleis, Sigrid · Rupich, Martin W. · Sathyamurthy, Srivatsan · Fleshler, Steven · Sheng, Huaping · Miller, Dean J. · Eley, Serena · Civale, Leonardo · Kayani, Asghar · Niraula, Prashantamani M. · Welp, Ulrich · Kwok, Wai-Kwong
Original · EN
We demonstrate that 3.5-MeV oxygen irradiation can markedly enhance the in-field critical current of commercial 2nd generation superconducting tapes with an exposure time of just one second per 0.8 cm2. The speed demonstrated here is now at the level required for an industrial reel-to-reel post-processing. The irradiation is made on production line samples through the protective silver coating and does not require any modification of the growth process. From TEM imaging, we identify small clusters as the main source of increased vortex pinning.
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