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无机材料学报

无机材料学报 ›› 2013, Vol. 28 ›› Issue (9): 956-960.DOI: 10.3724/SP.J.1077.2013.12741 CSTR: 32189.14.SP.J.1077.2013.12741

• 研究论文 • 上一篇    下一篇

Nb5+掺杂对低氟MOD法制备的YBCO薄膜性能的影响

毛 磊, 索红莉, 刘 敏, 张子立, 叶 帅, 马 麟   

  1. (北京工业大学 国家教育部功能材料重点实验室, 北京 100022)
  • 收稿日期:2012-12-06 修回日期:2013-03-06 出版日期:2013-09-20 网络出版日期:2013-08-14
  • 作者简介:毛 磊(1986-), 男, 硕士研究生. E-mail: maray@emails.bjut.edu.cn
  • 基金资助:

    国家自然科学基金(51171002); 北京市自然科学基金; 北京市教育委员会科技计划重点项目(KZ201310005003);中央财政支持地方高校建设专项资金; 211计划专项资金

Effect of Nb5+ -doped YBCO Film Synthesized by Low-fluorine MOD Method

MAO Lei, SUO Hong-Li, LIU Min, ZHANG Zi-Li, YE Shuai, MA Lin   

  1. (The Key Laboratory of Advanced Functional Materials, Ministry of Education, Beijing University of Technology, Beijing 100022, China)
  • Received:2012-12-06 Revised:2013-03-06 Published:2013-09-20 Online:2013-08-14
  • About author:MAO Lei. E-mail: maray@emails.bjut.edu.cn
  • Supported by:

    National Natural Science Foundation of China(51171002); Beijing Municipal Natural Science Foundation; Beijing Municipal Natural Science Foundation B Type (KZ201310005003); Special Funds from the Central Finance to Support the Construction of Local University; 211 Program of Beijing City and Beijing University of Technology

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摘要： 本研究通过低氟MOD法成功地制备了Nb5+掺杂的YBa2Cu3O7-x(YBCO)薄膜, Nb5+在薄膜中生成了大小在20~30 nm之间的纳米颗粒; 纳米颗粒的生成不会对 YBCO薄膜的织构和临界温度(Tc)构成明显的影响。由于纳米颗粒的引入, 掺杂后薄膜的临界电流密度(Jc)在整个磁场范围内都要高于纯的YBCO, 自场下的Jc更是达到了3.4 MA/cm2。掺杂薄膜的钉扎力(Fp)也远远大于纯YBCO, 最大钉扎力达到了3.25 GN/m3, 有效地提高了YBCO在外加磁下的超导性能。

关键词: YBCO薄膜, 掺杂, 低氟 MOD法, 双钙钛矿结构纳米颗粒, 场性能

Abstract: Nb5+-doped YBCO film was fabricated successfully by low-fluorine metal organic deposition (MOD) method. The effective pinning centers in doped film are attributed to Nb-containing nanoparticles with the size of 20-30 nm. Measurement results show that the texture and critical temperature of the doped film are not influenced obviously by the nanoparticles. In addition, a significant enhancement of Jc is observed for YBCO films with nanoparticles compared to that of pure YBCO film by the field dependence of Jc values. The self-field critical current density reaches as high as 3.4 MA/cm2, and the peak pinning force (Fp) of the doped film is greatly increased than the pure one, which reaches at 3.25 GN/m3.

Key words: YBCO film, doping , low-fluorine MOD method, double perovskite nanoparticles, field-property

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