Impurity-doping effects on critical current properties in ErBa 2Cu3Oy films

S. Horii, Y. Ichino, Y. Yoshida, K. Matsumoto, T. Horide, M. Mukaida, A. Ichinose, R. Kita, J. Shimoyama, K. Kishio

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    抄録

    We report on the critical current properties of the BaZrO3(BZO)- and Co-doped ErBa2Cu3Oy thin films grown by the pulse laser deposition method. The BZO-doped Er123 films processed through the oxygen post-annealing showed clear enhancement of critical current density (Jc) in comparison with normal Er123 thin films. Even in the BZO doping level of 0.5 wt.% for Er123, TEM observation revealed that nano-rods of BZO were embedded in Er123 matrix, which was qualitatively consistent with a result of angular dependence of Jc at 77 K. The Tc values of the slightly Co-doped films depend on the substrate temperature, while irreversibility lines for the temperature normalized by Tc were almost coincident with one another, which were overlapped on that of the normal Er123 thin film. The positive Co-doping effect on Jc emerged at low temperatures. We believe that local regions with lower Tc, in which the Co doping levels in the CuO2 planes were relatively higher than that of matrix, act as vortex pinning centers.

    本文言語英語
    ホスト出版物のタイトルElectroceramic Materials and Applications - Proceedings of the 6th Pacific Rim Conference on Ceramic and Glass Technology
    ページ57-65
    ページ数9
    出版ステータス出版済み - 12 1 2006
    イベント6th Pacific Rim Conference on Ceramic and Glass Technology - Maui, Hawaii, 米国
    継続期間: 9 11 20059 16 2005

    出版物シリーズ

    名前Ceramic Transactions
    196
    ISSN(印刷版)1042-1122

    その他

    その他6th Pacific Rim Conference on Ceramic and Glass Technology
    国/地域米国
    CityMaui, Hawaii
    Period9/11/059/16/05

    All Science Journal Classification (ASJC) codes

    • セラミックおよび複合材料
    • 材料化学

    フィンガープリント

    「Impurity-doping effects on critical current properties in ErBa <sub>2</sub>Cu<sub>3</sub>O<sub>y</sub> 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。

    引用スタイル