Improvement of superconducting properties of SmBa2Cu 3Oy films on MgO substrate by using BaZrO3 buffer layer

Katsuya Hasegawa, Junko Shibata, Teruo Izumi, Yuh Shiohara, Yoshihiro Sugawara, Tsukasa Hirayama, Fumiyasu Oba, Yuichi Ikuhara

    研究成果: Conference article査読

    17 被引用数 (Scopus)


    Superconducting transport-properties of SmBa2Cu 3Oy (Sm123) films on MgO single crystalline substrates prepared by pulsed laser deposition were investigated. It was found that not only Tc,zero values but also Jc-B properties of the Sm123 films were improved by the BaZrO3 (BZO) buffer layer on MgO substrates. Tc,zero=93.8 K, J c(77K,1T,B∥c)=7.5×105 A/cm2 were obtained for Sm123 films with 0.93 μm thickness. Cross-sectional TEM observations revealed that the Sm123 film grown on the BZO buffer layer has higher crystallinity compared to the Sm123 film without BZO. Thus, improvement of the microstructure for the Sm123 films led to the higher superconducting properties of the Sm123 films. In addition, the effects of the BZO buffer layer on the microstructure and correlation to the superconducting properties of the Sm123 films were explained in view of interfacial energies on the hetero-epitaxial growth.

    ジャーナルPhysica C: Superconductivity and its applications
    PART 2
    出版ステータスPublished - 2003 10
    イベントProceedings of the 15th International Symposium on Superconduc - Yokohama, Japan
    継続期間: 2002 11 112002 11 13

    ASJC Scopus subject areas

    • 電子材料、光学材料、および磁性材料
    • 凝縮系物理学
    • エネルギー工学および電力技術
    • 電子工学および電気工学


    「Improvement of superconducting properties of SmBa<sub>2</sub>Cu <sub>3</sub>O<sub>y</sub> films on MgO substrate by using BaZrO<sub>3</sub> buffer layer」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。