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掺杂Y2O3和BaCeO3提高MOD-YBCO超导性能的研究

丁发柱 古宏伟 张腾 王洪艳 屈飞 彭星煜 周微微

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掺杂Y2O3和BaCeO3提高MOD-YBCO超导性能的研究

丁发柱, 古宏伟, 张腾, 王洪艳, 屈飞, 彭星煜, 周微微

Enhanced flux pinning in MOD-YBCO films with co-doping of BaCeO3 and Y2O3 nanoparitcles

Ding Fa-Zhu, Gu Hong-Wei, Zhang Teng, Wang Hong-Yan, Qu Fei, Peng Xing-Yu, Zhou Wei-Wei
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  • 本文通过在前驱液中添加过量钇盐和铈的有机盐,采用三氟乙酸盐-金属有机沉积法(TFA-MOD) 在铝酸镧单晶基体上制备了含有纳米氧化钇和纳米铈酸钡的YBCO薄膜. 与纯YBCO薄膜相比,掺杂Y2O3/BaCeO3的YBCO膜的临界转变温度几乎保持不变,为91 K左右. 而掺杂Y2O3/BaCeO3的YBCO膜的临界电流密度达到5.0 MA/cm2 (77 K, 0T), 是纯YBCO膜临界电流密度的1.5倍.薄膜中的Y2O3和BaCeO3可能在YBCO内部起到了 有效的钉扎磁通作用.
    Enhancing the critical-current density of YBCO films is essential to gain a deeper understanding of the vortex pinning mechanisms and enable commercial applications of high-temperature superconductivity. Combined BaCeO3 and Y2O3 nanoparticles have been achieved to be co-doped in YBa2Cu3O7-x (YBCO) films by metalorganic deposition using trifluoroacetates (TFA-MOD). The formation of integrated nanoparticles increases the critical current density (Jc) of Y2O3/BaCeO3 doped-YBCO films while keeping the critical transition temperature (Tc) close to that in the pure YBCO films. YBCO film containing BaCeO3 and Y2O3 showed Tc value of 91 K and Jc value of 5 MA/cm2 at self-field (0 T, 77 K). The strongly enhanced flux pinning over a wide range of magnetic field may be attributed to the combined BaCeO3 and Y2O3 created by optimized TFA-MOD conditions.
    • 基金项目: 国家重点基础研究发展计划(批准号: 2011CBA00105); 国家自然科学基金(批准号: 51002149, 51272250)资助的课题.
    • Funds: Project supported by the National Basic Research Program of China (Grant No. 2011CBA00105), and the National Natural Science Foundation of China (Grant Nos. 51002149, 51272250).
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    Gutierrez J, Puig T, Gibert M, Moreno C, Roma N, Pomar A, Obradors X 2009 Appl. Phys. Lett. 94 172513

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    Vanpoucke D, Cottenier S, Speybroeckc V V, Bultinck P, Driessche I V 2012 Appl. Surf. Sci. 260 32

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    Maiorov B, Baily S A, Zhou H, Ugurlu O, Kennison J A, Dowden P C, Holesinger T G, Foltyn S R, Civale L 2009 Nature Mater. 8 398

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    Engel S, Thersleff T, Hhne R, Schultz L, Holzapfel B 2007 Appl. Phys. Lett. 90 102505

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    Samoilenkov S V, Boytsova O V, Amelichev V A, Kaul A R 2011 Supercond. Sci. Technol. 24 055003

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    Varanasi C V, Burke J, Brunke L, Wang H, Sumption M, Barnes P N 2007 J. Appl. Phys. 102 063909

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    Ding F Z, Gu H W 2010 Acta Phys. Sin. 59 8142 (in Chinese) [丁发柱, 古宏伟 2010 物理学报 59 8142]

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    Ding F Z, Gu H W, Zhang T, Dai S T, Xiao L Y 2011 Chin. Phys. B 20 027402

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    Ding F, Gu H, Zhang T, Wang H, Qu F, Dai S, Peng X, Cao J 2012 J. Alloys Compd. 513 277

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    Hanisch J, Cai C, Huhne R, Schultz L, Holzapfel B 2005 Appl. Phys. Lett. 86 122508

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    Kiessling A, Hänisch J, Thersleff T, Reich E, Weigand M, Hhne R, Sparing M, Holzapfel B, Durrell J H, Schultz1 L 2011 Supercond. Sci. Technol. 24 055018

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    Ishii Y, Shimoyama J, Tazaki Y, Nakashima T, Horii S, Kishio K 2006 Appl. Phys. Lett. 89 202514

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    [18]

    Develos-Bagarinao K, Yamasaki H 2011 Supercond. Sci. Technol. 24 065017

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    Haugan T, Barnes P N, Wheeler R, Meisenkothen F, Sumption M 2004 Nature 430 867

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出版历程
  • 收稿日期:  2013-02-27
  • 修回日期:  2013-03-18
  • 刊出日期:  2013-07-05

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