APL Materials (Jun 2016)

Enhanced 77 K vortex-pinning in Y Ba2Cu3O7−x films with Ba2Y TaO6 and mixed Ba2Y TaO6 + Ba2Y NbO6 nano-columnar inclusions with irreversibility field to 11 T

  • F. Rizzo,
  • A. Augieri,
  • A. Angrisani Armenio,
  • V. Galluzzi,
  • A. Mancini,
  • V. Pinto,
  • A. Rufoloni,
  • A. Vannozzi,
  • M. Bianchetti,
  • A. Kursumovic,
  • J. L. MacManus-Driscoll,
  • A. Meledin,
  • G. Van Tendeloo,
  • G. Celentano

DOI
https://doi.org/10.1063/1.4953436
Journal volume & issue
Vol. 4, no. 6
pp. 061101 – 061101-7

Abstract

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Pulsed laser deposited thin Y Ba2Cu3O7−x (YBCO) films with pinning additions of 5 at. % Ba2Y TaO6 (BYTO) were compared to films with 2.5 at. % Ba2Y TaO6 + 2.5 at. % Ba2Y NbO6 (BYNTO) additions. Excellent magnetic flux-pinning at 77 K was obtained with remarkably high irreversibility fields greater than 10 T (YBCO-BYTO) and 11 T (YBCO-BYNTO), representing the highest ever achieved values in YBCO films.