Influence of Annealing Temperature on the Structure and Performance of YBCO Thin Film on MgO Substrate

2nd International Conference on Design, Materials, and Manufacturing

材料科学;机械制造

Guo, L.^1 ; Wang, L.^1 ; Cao, S.^1

Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou Institute of Physics, P. O. Box 94, Lanzhou, Gansu, China^1

关键词: Annealing temperatures;    Annealing treatments;    C-axis orientations;    Low temperatures;    Research results;    Structure and performance;    Superconducting performance;    YBCO thin film;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/220/1/012008/pdf
DOI  :  10.1088/1757-899X/220/1/012008

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Annealing treatment is adopted for studying the changes of structure and low temperature superconducting performance of YBCO thin film on MgO Substrate. X-ray diffraction (XRD) analysis results show that c axis orientation of YBCO thin film is optimized with the rise of annealing temperature. It reaches the optimum value at 720 °C. The c axis orientation of YBCO thin film shows recession when the annealing temperature is higher than 720 °C. The change trend of increasing firstly and decreasing subsequently is also discovered with annealing temperature, the optimal critical current density value is obtained at about 730 °C. Research results show that the YBCO thin film structure and low temperature superconducting performance can be effectively improved through optimizing annealing temperature.