Critical current enhancement in PLD YBa2Cu3O7-x films using artificial pinning centers

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

研究成果: Article

12 引用 (Scopus)


We introduced high-density columnar defects as artificial pinning centers (APCs) for quantized vortices into YBa2Cu3O7-x (YBCO) films during the film deposition procedure. APCs were introduced perpendicular to the film surface using nano-sized Y2O3 islands prepared on SrTiO3(1 0 0) substrates. Varying the deposition parameters and the substrate annealing conditions allowed strong changes in the shape and density of the Y2O3 islands to be induced. Compared to a pure YBCO film, the best performance among the APCs samples was obtained on the Y2O3-deposited substrate with 5 laser pulses, corresponding to a nominal thickness of 0.2 nm. Even when the APC films were prepared using the same deposition conditions, the columnar defects enhanced Jc at 77 K from 1.8 to 2.7 MA/cm2 (self field) and from 0.06 to 0.10 MA/cm2 (H = 5 T, H∥c-axis).

ジャーナルPhysica C: Superconductivity and its applications
出版物ステータスPublished - 2006 10 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

フィンガープリント Critical current enhancement in PLD YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub> films using artificial pinning centers' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Mele, P., Matsumoto, K., Horide, T., Miura, O., Ichinose, A., Mukaida, M., Yoshida, Y., & Horii, S. (2006). Critical current enhancement in PLD YBa2Cu3O7-x films using artificial pinning centers. Physica C: Superconductivity and its applications, 445-448(1-2), 648-651.