[23a-D215-1~10] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

△ [23a-D215-6] Optimization of pressure of uniaxial pressing in fabrication of superconducting joints between Bi-2223 tapes

〇Yasuaki Takeda¹, Gen Nishijima¹, Hitoshi Kitaguchi¹ (1.NIMS)

Keywords:superconducting joint, Bi-2223, HTS

In fabrication of a superconducting joint between Bi-2223 tapes that we previously reported, pressure of uniaxial pressing prior to sintering can be an important parameter to achive high I_c. This is because high-pressure pressing is probabaly effective to improve grain coupling at the joint interfaces although it may cause the mechanical damage to the filaments of tapes. In this study, we optimized pressure of uniaxial pressing to establish a strategy for control of I_c.