High-critical-current-density epitaxial films of SmBa2Cu 3O7-x in high fields

Yutaka Yoshida, Kaname Matsumoto, Yusuke Ichino, Masakazu Itoh, Ataru Ichinose, Shigeru Horii, Masashi Mukaida, Yoshiaki Takai

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47 Citations (Scopus)

Abstract

The critical current density (Jc) and irreversibility field (Birr) of epitaxial SmBa2Cu3O7-x (SmBCO) films are reported. The Birr and Jc of these films deposited on MgO(100) substrates by pulsed-laser deposition depend critically on the substrate temperature. The use of a thin SmBCO seed layer grown at a high substrate temperature enabled us to obtain fully c-axis-oriented SmBCO films at relatively low temperatures, resulting in a high Jc of 1.7 × 105 A/cm2 of B ∥ c at 5 T and 77 K. This value is as high as that of the optimized NbTi superconducting wires achieved at 5 T and 4.2 K.

Original languageEnglish
Pages (from-to)L129-L132
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume44
Issue number1-7
DOIs
Publication statusPublished - May 3 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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