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

    47 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
    Issue number16-19
    Publication statusPublished - 2005

    All Science Journal Classification (ASJC) codes

    • General Engineering
    • General Physics and Astronomy


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