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

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

研究成果: Article査読

35 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号015019
ジャーナルSuperconductor Science and Technology
21
1
DOI
出版ステータスPublished - 2008 1 1
外部発表はい

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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