[12a-N402-1~11] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

△ [12a-N402-5] Synthesis of RE123 thin films on IBAD substrate by FF-MOD method

〇Yuta Segawa¹, Takanori Motoki¹, Miyako Kozawa¹, Shin-ichi Nakamura², Genki Honda³, Tatsuoki Nagaishi³, Shin-ichi Kobayashi³, Jun-ichi Shimoyama¹ (1.Aoyama Gakuin Univ., 2.TEP, 3.Sumitomo Electric Industries, Ltd)

Keywords:superconductivity, thin film

Among various chemical methods for preparation of REBa₂Cu₃O_y (RE123) superconducting thin films, fluorine-free metal organic decomposition (FF-MOD) method is the most suitable for mass production because biaxially oriented thin films can be grown in a short time by a relatively simple solid-state reaction. In this study, we have optimized the sintering conditions for the improvement of I_c in the preparation of RE123 thin films on tape metal IBAD substrates (CeO₂/LaMnO₃/MgO/LaMnO₃/Al₂O₃/Hastelloy) with a biaxially oriented intermediate layer that can be made longer by using the FF-MOD method. We are currently optimizing the sintering conditions to improve the I_c.