High Performance of YBCO Films Prepared by Fluorine-Free MOD Method and a Direct Annealing Process

Abstract:

Chemical solution-deposited (CSD) is a cost-effective non-vacuum method for YBCO coated conductor fabrication. We developed a new fluorine-free metal-organic deposition (MOD) method with metal acetates, propionic acid and xylene as the starting materials. Using this non-fluorine MOD method, we were able to get high performance YBCO superconducting films within a shortened heat treatment time, which was reduced by at Least 5 h in comparison with that for pyrolysis-annealing non-fluorine MOD process. Superconducting property, with a critial current density (Jc) over 0.55MA/cm² at 77K, self-field has been obtained for 380 nm epitaxial YBCO thin films on (00l) LaAlO₃ (LAO) single crystal substrate. Owing to the low price of starting materials and shorter heat treatment time, fluorine-free MOD method is a very effective and cost-cutting process.

• Periodical: Key Engineering Materials (Volume 537)
• Pages: 243-246
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.537.243
• Online since: January 2013
• Authors: Xiang Xue Xu, Wan Chen Xu, Yue Ling Bai, Chuan Bin Cai, Jian Hui Fang
• Keywords: Fluorine-Free MOD, One-Step Heat Treatment, Xylene, YBCO Films

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