[16p-318-1~16] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

△ [16p-318-10] Various effects of oxyhalide for fluorine-free MOD processed YBCO films

〇Takanori Motoki^1,4, Shuhei Ikeda¹, Shin-ichi Nakamura¹, Genki Honda², Tatsuoki Nagaishi², Toshiya Doi^3,4, Jun-ichi Shimoyama^1,4 (1.Aoyama-Gakuin Univ., 2.Sumitomo Electric Industries, Ltd., 3.Kyoto Univ., 4.JST-ALCA)

Keywords:fluorine-free MOD, halogen addition, YBCO thin film

Among various methods of preparing REBCO thin films, fluorine-free MOD is one of the most promising method for mass production. Our group has been focusing on Cl-addition to the YBCO raw solution, which results in generation of oxychloride Ba₂Cu₃O₄Cl₂ (Ba2342). It was found that Ba2342 precipitates helped biaxial alignment of YBCO matrix and improved J_c properties. It was revealed from cross-sectional observation of Cl-added YBCO films that Ba2342 precipitates were coherently connected to YBCO with high lattice matching. We will report various effects of oxyhalide for fluorine-free MOD processed YBCO thin films in the meeting.