中国物理B ›› 2004, Vol. 13 ›› Issue (2): 238-242.doi: 10.1088/1009-1963/13/2/020

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Fabrication of YBCO/YSZ and YBCO/MgO thick films using electrophoretic deposition with top-seeded melt growth process

朱亚彬, 周岳亮, 王淑芳, 刘震, 张芹, 陈正豪, 吕惠宾, 杨国桢   

  1. Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
  • 收稿日期:2003-06-06 修回日期:2003-10-13 出版日期:2004-02-06 发布日期:2005-07-06
  • 基金资助:
    Project supported by the State Key Development Program for Basic Research of China (Grant No 1999064604).

Fabrication of YBCO/YSZ and YBCO/MgO thick films using electrophoretic deposition with top-seeded melt growth process

Zhu Ya-Bin (朱亚彬), Zhou Yue-Liang (周岳亮), Wang Shu-Fang (王淑芳), Liu Zhen (刘震), Zhang Qin (张芹), Chen Zheng-Hao (陈正豪), Lü Hui-Bin (吕惠宾), Yang Guo-Zhen (杨国桢)   

  1. Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2003-06-06 Revised:2003-10-13 Online:2004-02-06 Published:2005-07-06
  • Supported by:
    Project supported by the State Key Development Program for Basic Research of China (Grant No 1999064604).

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摘要： Superconducting thick films were grown on single crystals MgO and YSZ by electrophoretic deposition with Y_2BaCuO_5(Y211) addition. YBCO thick films were then accomplished by sintering the precursor films above the peritectic temperature. Single crystals of MgO (3×3×0.5 mm^3) were used as top-seed to control crystal structure of the thick films. As shown by scanning electron microscopy, the morphologies of YBCO/YSZ and YBCO/MgO thick films are spherulitic texture and platelet type. The critical temperature is ～89 K for the YBCO/YSZ thick film; the onset transition temperature is 86.4 K and the transition width is ～3 K for YBCO/MgO thick film. The critical current densities (as determined by Bean model) are, in A/cm^2, 3870 (77 K) for YBCO/YSZ thick films and 2399 (77 K) for YBCO/MgO thick films, which are comparable to the best J_c reported of the thick films prepared by the same method.

关键词: YBCO thick films, electrophoretic deposition, melt-textured

Abstract: Superconducting thick films were grown on single crystals MgO and YSZ by electrophoretic deposition with Y$_2$BaCuO$_5$(Y211) addition. YBCO thick films were then accomplished by sintering the precursor films above the peritectic temperature. Single crystals of MgO ($3\times3\times0.5$ mm$^3$) were used as top-seed to control crystal structure of the thick films. As shown by scanning electron microscopy, the morphologies of YBCO/YSZ and YBCO/MgO thick films are spherulitic texture and platelet type. The critical temperature is $\sim$89 K for the YBCO/YSZ thick film; the onset transition temperature is 86.4 K and the transition width is $\sim3$ K for YBCO/MgO thick film. The critical current densities (as determined by Bean model) are, in A/cm$^2$, 3870 (77 K) for YBCO/YSZ thick films and 2399 (77 K) for YBCO/MgO thick films, which are comparable to the best $J_{\rm c}$ reported of the thick films prepared by the same method.

Key words: YBCO thick films, electrophoretic deposition, melt-textured

中图分类号:  (Superconducting films and low-dimensional structures)

  • 74.78.-w
81.10.Fq (Growth from melts; zone melting and refining) 74.62.Bf (Effects of material synthesis, crystal structure, and chemical composition)