中国物理B ›› 2011, Vol. 20 ›› Issue (2): 27402-027402.doi: 10.1088/1674-1056/20/2/027402

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Influence of oxygen pressure on critical current density and magnetic flux pinning structures in YBa2Cu3O7-x fabricated by chemical solution deposition

丁发柱, 古宏伟, 张腾, 戴少涛, 肖立业   

  1. Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2010-09-01 修回日期:2010-09-13 出版日期:2011-02-15 发布日期:2011-02-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 51002149).

Influence of oxygen pressure on critical current density and magnetic flux pinning structures in YBa2Cu3O7-x fabricated by chemical solution deposition

Ding Fa-Zhu(丁发柱)†, Gu Hong-Wei(古宏伟), Zhang Teng(张腾), Dai Shao-Tao(戴少涛), and Xiao Li-Ye(肖立业)   

  1. Key Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2010-09-01 Revised:2010-09-13 Online:2011-02-15 Published:2011-02-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 51002149).

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摘要： This paper studies the effect of oxygen partial pressure on the fabrication of YBa2Cu3O7-x films on (00l) LaAlO3 substrates by metalorganic deposition using trifluoroacetates (TFA-MOD). As the oxygen partial pressure increases to 1500 Pa, a great increase in the superconducting properties is observed at high magnetic fields parallel to the YBCO c axis. The cross-sectional transmission electron microscope images show that a high density of stacking faults in the size range of 10--15 nm may act as flux pinning centres to enhance the critical current density of the YBCO films

Abstract: This paper studies the effect of oxygen partial pressure on the fabrication of YBa2Cu3O7-x films on (00l) LaAlO3 substrates by metalorganic deposition using trifluoroacetates (TFA-MOD). As the oxygen partial pressure increases to 1500 Pa, a great increase in the superconducting properties is observed at high magnetic fields parallel to the YBCO c axis. The cross-sectional transmission electron microscope images show that a high density of stacking faults in the size range of 10-15 nm may act as flux pinning centres to enhance the critical current density of the YBCO films.

Key words: YBCO, oxygen pressure, stacking fault, TFA-MOD

中图分类号: 

  • 74.76.Bz
81.15.Lm (Liquid phase epitaxy; deposition from liquid phases (melts, solutions, And surface layers on liquids))