Journal of Superconductivity and Novel Magnetism

, Volume 31, Issue 9, pp 2705–2710 | Cite as

Effect of Yb Substitution on Microstructure and Superconducting Properties of Y1−xYbxBa2Cu3O7−δ Films

  • Chunyan Li
  • Hongli SuoEmail author
  • Shuai Ye
  • Min Liu
  • Lin Ma
  • Min Tian
  • Ya Wang
Original Paper


The purpose of this study was to improve the critical current density (Jc) of YBa2Cu3O7−δ (YBCO) superconducting films at high magnetic fields. Thin Y1−xYbxBa2Cu3O7−δ (Y1−xYbxBCO) superconducting films on LaAlO3 substrates were prepared by modified low-fluorine metal organic deposition method (LF-MOD) in order to investigate the effect of Yb substitution on the microstructure and superconducting properties of a YBCO-coated conductor. In this study, single-phased, c-axial-aligned Y1−xYbxBCO films were obtained. Yb doping had a little effect on the critical temperature (Tc) and transition width (ΔT) values of Y1−xYbxBCO films. An abnormal phenomenon was observed that the Jc of Y1−xYbxBCO films at low field was smaller than that of the pure YBCO film, but the Jc of Y1−xYbxBCO films at high field was much greater than that of the undoped YBCO film. Compared to pure YBCO film, the Jc values of Y0.75Yb0.25BCO and Y0.25Yb0.75BCO films were enhanced by a factor of 8 at 8 T, 65 K, which meant that chemical substitution of Yb into the Y site could improve flux pinning significantly under the high magnetic field in Y1−xYbxBCO coated conductors.


Y1−xYbxBCO films Microstructure Yb substitution Critical current density 


Funding Information

This work is financially supported by the National Natural Science Foundation of China (51571002), by the Beijing Municipal Natural Science Foundation (2172008), by the Doctoral Program of Higher Education of Special Research Fund (20121103110012), by the Beijing Municipal Natural Science Foundation B Type (KZ201310005003), and by the Program of Beijing City and Beijing University of Technology.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Chunyan Li
    • 1
  • Hongli Suo
    • 1
    Email author
  • Shuai Ye
    • 2
  • Min Liu
    • 1
  • Lin Ma
    • 1
  • Min Tian
    • 1
  • Ya Wang
    • 1
  1. 1.The Key Laboratory of Advanced Functional Materials, Ministry of EducationBeijing University of TechnologyBeijingChina
  2. 2.Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceShenzhen UniversityShenzhenChina

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