en
Scientific article
English

Double-disordered HTS-coated conductors and their assemblies aimed for ultra-high fields: large area tapes

Published inIEEE Transactions on Applied Superconductivity, vol. 28, no. 4, p. 1-6
Publication date2018
Abstract

Double disordered (DD) HTS layers processed via high-fluence PLD with modulated pressure and barium zirconate precipitation yield very high engineering current densities, above 900 and 600 A/mm2 at 18 and 31 T, respectively, measured at 4.2 K and B||c. Tape architecture is based on 50-100-μm-thick polished stainless steel tape which prior to DD-HTS deposition was coated with YSZ template yielding a biaxial in-plane texture with FWHM = 10-11° characterized using phi-scan XRD technique. High-resolution nanostructural analysis indicated a number of nonusual features in DD YBCO layers regarding “firework”-like orientation of nanoprecipitations /nanochains. These new features result in a very high concentration of local defects which reduce the critical current (Ic) measured at 77 K, self-field to about 30% of the corresponding Ic in non-DD YBCO, and simultaneously lead to substantial gaining of Ic at high fields. The main result is a substantial improvement of Ic and engineering current density (Je) achieved at high field and liquid Helium temperature in long length, large area tapes with 4 and 12 mm width. Je above 970 A/mm2 at 4.2 K, B = 18 T, B||c was achieved in 12-mm-wide tape.

Keywords
  • High-temperature superconductors
  • Superconducting
  • Tapes
  • Yttrium compounds
  • Laser ablation
  • Epitaxial growth,
  • Doping
  • Superconducting materials
Research group
Funding
  • European Commission - Enhanced European Coordination for Accelerator Research & Development [312453]
  • European Commission - Accelerator Research and Innovation for European Science and Society [730871]
Citation (ISO format)
USOSKIN, Alexander et al. Double-disordered HTS-coated conductors and their assemblies aimed for ultra-high fields: large area tapes. In: IEEE Transactions on Applied Superconductivity, 2018, vol. 28, n° 4, p. 1–6. doi: 10.1109/TASC.2018.2801348
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Article (Published version)
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Identifiers
ISSN of the journal1051-8223
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Technical informations

Creation07/06/2018 9:03:00 AM
First validation07/06/2018 9:03:00 AM
Update time03/15/2023 8:23:50 AM
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