High-critical-current-density SmBa2Cu3O7-x films induced by surface nanoparticle

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

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)


In oxide-based superconducting thin films, conceivable factors that give rise to a pinning center include dislocations, precipitates, twin boundaries, and a-axis-oriented phases. In this study, crystalline defects were created perpendicular to a high-Jc Sm1+xBa2-xCu 3Oy film surface during a film deposition process. We obtained extremely high Jc values, Jc = 0.37 MA/cm 2 (77 K, B // c, B = 5 T) and JC = 0.1 MA/cm2 (77 K, B // c, B = 8 T). These values are equal to or exceed that of the previously reported NbTi wire material measured in a high magnetic field at 4.2 K.

Original languageEnglish
Pages (from-to)L546-L548
JournalJapanese Journal of Applied Physics, Part 2: Letters
Issue number16-19
Publication statusPublished - Dec 1 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

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


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