Enhancement of flux-pinning in epitaxial Sm1+xBa 2-xCu3Oy films by introduction of low-T c nanoparticles

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

    研究成果: Contribution to journalArticle査読

    37 被引用数 (Scopus)


    Sm1+xBa2-xCu3Oy (SmBCO) films prepared by the low-temperature growth (LTG) technique showed a critical current density (Jc) as high as 0.28 MA/cm2 (77 K, B ∥ c,B = 5 T). However, Jc was lower than that of NbTi wire (4.2 K) above 5 T. In this study, we introduced nanoparticle superconductors with a low critical temperature (low-Tc) into LTG-SmBCO "LTG-SmBCO + nanoparticle" films to improve Jc under the high magnetic field, and obtained an extremely high Jc, 0.1 MA/cm2 (77 K, B ∥ c, B = 8 T). Energy-dispersive X-ray spectroscopy (EDX) showed that the "LTG-SmBCO + nanoparticle" films had a nanosize low-Tc phase and a low-Tc network dispersed in the high-Tc matrix. We concluded that the "LTG-SmBCO + nanoparticle" films could have enhanced Jc by the introduction of pinning centers and the improvement of irreversibility field (Bin).

    ジャーナルJapanese Journal of Applied Physics, Part 2: Letters
    出版ステータス出版済み - 1 31 2006

    All Science Journal Classification (ASJC) codes

    • 工学(全般)
    • 物理学および天文学(その他)
    • 物理学および天文学(全般)


    「Enhancement of flux-pinning in epitaxial Sm<sub>1+x</sub>Ba <sub>2-x</sub>Cu<sub>3</sub>O<sub>y</sub> films by introduction of low-T <sub>c</sub> nanoparticles」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。