Incorporation of double artificial pinning centers in YBa 2Cu3O7-d films

Paolo Mele, K. Matsumoto, T. Horide, A. Ichinose, M. Mukaida, Y. Yoshida, S. Horii, R. Kita

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Abstract

YBa2Cu3O7-x+BaZrO3+Y 2O3 (YBCO+BaZrO3+Y2O3) mixed films were prepared on SrTiO3/MgO substrates by pulsed-laser deposition, with an YBCO+BaZrO3 target with a thin Y 2O3 sector stuck on the top. The pinning properties for the double-doped YBCO+BaZrO3+Y2O3 thin film were enhanced in comparison with those of a pure YBCO sample prepared in the same experimental conditions. The maximum global pinning forces Fp for the double-doped sample are 12.8GN m-3 near 3 T at 77 K, 46.3 GN m-3 near 4 T at 65 K, and 122 GN m-3 near 9 T at 40 K. In the double-doped sample the angular dependence of Jc showed a broad peak at , due to the flux pinning by c-axis correlated defects, combined with a plateau, due to the flux pinning by isotropic pinning centers. Both BaZrO 3 nanorods parallel to the c-axis and Y2O3 nanoparticles randomly dispersed inside the YBCO matrix were consistently observed in the cross sectional transmission electron microscopy images.

Original languageEnglish
Article number015019
JournalSuperconductor Science and Technology
Volume21
Issue number1
DOIs
Publication statusPublished - 2008 Jan 1
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Mele, P., Matsumoto, K., Horide, T., Ichinose, A., Mukaida, M., Yoshida, Y., ... Kita, R. (2008). Incorporation of double artificial pinning centers in YBa 2Cu3O7-d films. Superconductor Science and Technology, 21(1), [015019]. https://doi.org/10.1088/0953-2048/21/01/015019