Fabrication of YBCO/CeO2/YBCO multilayer films through an all chemical solution deposition approach

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• 作者：Li Lei (1)
  Yan Bai (2)
  Chuanbao Wu (2)
  Gaoyang Zhao (1) (2)
  
• 关键词：Chemical solution deposition ; YBCO ; Epitaxial growth ; Superconductivity
• 刊名：Journal of Sol-Gel Science and Technology
• 出版年：2014
• 出版时间：January 2014
• 年：2014
• 卷：69
• 期：1
• 页码：21-25
• 全文大小：1,043 KB
• 作者单位：Li Lei (1)
  Yan Bai (2)
  Chuanbao Wu (2)
  Gaoyang Zhao (1) (2)
  
  1. Advanced Material Analysis and Test Center, Xi’an University of Technology, Xi’an, 710048, China
  2. School of Material Science and Engineering, Xi’an University of Technology, Xi’an, 710048, China
  
• ISSN：1573-4846

文摘

In this paper, the growth characteristics and superconducting properties of YBCO/CeO2/YBCO multilayer films derived from an all chemical solution deposition process layer by layer are investigated. X-ray diffraction results show that the c-axis epitaxial growth feature of the bottom YBa2Cu3O7-δ (YBCO) film was perfectly inherited. Alternating epitaxial growth of YBCO/CeO2/YBCO multilayer films was confirmed by high resolution transmission electron microscopy in combination with selected area electron diffraction, which will lay?the groundwork for preparation of SIS-type Josephson junctions. In addition, nanosized BaCeO3 particle rather than BaCeO3 transition layer was observed in the interface between YBCO and CeO2. The superconductivity measurement results show that the proposal method gives better superconducting properties only for high magnetic field and at low magnetic field it deteriorates the superconducting properties.