Effect of BaZrO3 addition and film growth on superconducting properties of (Nd, Eu, Gd)Ba2Cu3Oy thin films

Yusuke Ichino, Yutaka Yoshida, Kouichi Inoue, Toshinori Ozaki, Yoshiaki Takai, Kaname Matsumoto, Masashi Mukaida, Ryusuke Kita, Ataru Ichinose, Shigeru Horii

    研究成果: Contribution to journalArticle査読


    We report that (Nd, Eu, Gd)Ba2Cu3Oy (NEG) films grown by low temperature growth (LTG) technique exhibit excellent superconducting properties in magnetic fields. In this study, we aim to improve the superconducting properties of NEG films by means of a modified LTG technique (mLTG) in which the surface of a highly c-axis oriented NEG seed layer is decorated by BaZrO3 (BZO) nanodots and an NEG upper layer on the seed layer is deposited at relatively low substrate temperature by using a BZO doped NEG123 target. From magnetic field and angular dependence of Jc, even Jc peak around,B//c-axis of an LTG-NEG films including BZO was larger than that of LTG-NEG without BZO. Furthermore, the mLTG-NEG films showed larger Jc peak than the LTG-NEG films with BZO and the Jc peak increased with increasing the BZO nanodots density. TEM images clarified that these films included BZO nanorods with a diameter of 5∼10 nm and the number density increased by introducing the BZO nanodots. Therefore, we concluded that the mLTG enabled to improve the superconducting properties due to control the configuration of BZO nanorods in the films.

    ジャーナルIEEE Transactions on Applied Superconductivity
    出版ステータス出版済み - 6 2009

    All Science Journal Classification (ASJC) codes

    • 電子材料、光学材料、および磁性材料
    • 凝縮系物理学
    • 電子工学および電気工学


    「Effect of BaZrO<sub>3</sub> addition and film growth on superconducting properties of (Nd, Eu, Gd)Ba<sub>2</sub>Cu<sub>3</sub>O<sub>y</sub> thin films」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。