Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Oxide precursor-based MOD processing of YBCO thin films

  • Kim, Young-Kuk (Dept. of Materials Engineering, Korea Institute of Machinery and Materials (KIMM)) ;
  • Yoo, Jai-Moo (Dept. of Materials Engineering, Korea Institute of Machinery and Materials (KIMM)) ;
  • Ko, Jae-Woong (Dept. of Materials Engineering, Korea Institute of Machinery and Materials (KIMM)) ;
  • Chung, Kook-Chae (Dept. of Materials Engineering, Korea Institute of Machinery and Materials (KIMM)) ;
  • Heo, Soon-Young (Dept. of Materials Engineering, Korea Institute of Machinery and Materials (KIMM))
  • Published : 2004.11.01
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Abstract

A low cost MOD processing using YBCO oxide powder as a starting precursor was employed for fabrication of YBCO thin films. YBCO oxide is advantageous over metal acetates or TFA salts which are popular starting precursors for conventional MOD-TFA process. YBCO thin films were prepared by oxide-precursor-based MOD process and annealing condition was optimized. The YBCO thin film annealed at 78$0^{\circ}C$ shows no transport $I_c$ and poor microstructure. However, the YBCO thin film annealed at higher temperature shows improvement in microstructure and current transport property. In order to improve critical current, YBCO thin film was prepared by double coating method. YBCO thin film prepared with double coating approach shows enhanced superconducting performance ($I_c$>100A/cm-w).

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References

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