[11a-S321-1~5] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

△ [11a-S321-5] Joint between Bi2223 polycrystalline bulks for clarification of the superconducting joint principle

〇Yasuaki Takeda¹, Takanori Motoki², Shin-ichi Nakamura³, Takayoshi Nakashima⁴, Shin-ichi Kobayashi⁴, Takeshi Kato⁴, Jun-ichi Shimoyama² (1.The Univ. of Tokyo, 2.Aoyama Gakuin Univ., 3.TEP, Ltd, 4.SEI, Ltd)

Keywords:superconducting joint, Bi-based superconductor, superconductivity

Recently, we have successfully demonstrated high I_c superconducting joint between the commercialized Bi2223 tapes. However, the superconducting joint principle is not clarified and there is room for discussion about strategies for the improvement in I_c characteristics. Based on these backgrounds, superconducting joint between Bi2223 polycrystalline bulks was attempted in this study.