A research for improvement of crystallinity and critical temperature by oxygen pressure in ErBa2Cu3O7-δ films

K. Yuki, M. Mukaida, H. Kai, R. Teranishi, K. Yamada, N. Mori, S. Horii, A. Ichinose, Y. Yoshida, K. Matsumoto

    研究成果: ジャーナルへの寄稿学術誌査読

    抄録

    We grew pure ErBa2Cu3O7-δ (ErBCO) films and ErBCO films with BaSnO3 (BSO) doping as artificial pinning centers (APCs) by pulse laser deposition on SrTiO3 substrates, and the effects of oxygen pressure on crystallinity, critical temperature (TC) and microstructure of ErBCO films were investigated. In a previous study, we grew ErBCO films with BaNb2O6 (BNO) by controlling the growth temperature under a constant oxygen pressure of 400mTorr and confirmed the effect of BNO as APCs. We observed the tendency which diameter of nanorods became small and pinning force was strong at lower growth temperature. However, crystallinity and TC of ErBCO films degraded at low growth temperature. So, it is very important to improve crystallinity and TC by a novel method. In this study, we focused on oxygen pressure, and aimed at improvement of crystallinity and TC by controlling oxygen pressure.

    本文言語英語
    ページ(範囲)1384-1387
    ページ数4
    ジャーナルPhysica C: Superconductivity and its applications
    469
    15-20
    DOI
    出版ステータス出版済み - 10月 15 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
    • 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

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