[11p-N402-1~10] 11.3 Critical Current, Superconducting Power Applications

[11p-N402-8] Hysteresis behavior of transport J_c in (Ba, K)Fe₂As₂ tape

〇Satoshi Awaji¹, Junyi Luo¹, Tatsunori Okada¹, Takumi Suzuki², Chao Yao³, Yanwei Ma³ (1.Tohoku Univ., 2.Seikei Univ., 3.IEE-CAS)

Keywords:Iron-based superconductor, critical current, weak link

The transport J_c hysteresis are investigated in Iron-based superconductor (Ba, K)Fe₂As₂ (Ba122) tapes. The hysteresis of J_c is larger for B//ab than for B//c in the Ag/Ba122 and Cu/Ag/Ba122 tapes. We discuss the origin of J_c hystersis in PIT Ba122 tapes based on the field and angular dependence of J_c and its current path.