[22a-A304-1~9] 11.3 臨界電流，超伝導パワー応用

[22a-A304-3] Magnetic Field and Angular Hysteresis Behaviors of Critical Current in the Multifilamentary Cu/Ag-Ba_1-xK_xFe₂As₂ Tapes

〇羅 くんい¹、岡田 達典¹、淡路 智¹、劉 聡²、馬 衍偉² (1.東北大金研、2.中科院電工所)

キーワード：鉄系超伝導体、臨界電流、ヒステリシス

In this study, we focus on the flat-rolled 7-filamentary Cu/Ag-Ba122 tapes to find the current limiting factors and improve J_c. By examining the magnetic field and angular dependences of critical current I_c (I_c-B and I_c-θ), we analyzed the magnetic field and angular hysteresis behaviors of I_c in the samples. The complex hysteresis properties of I_c are considered to be dominated by the weak links in the plane and at the c-axis along with the field components at 0° (perpendicular) and 90° (parallel). In this presentation, we will illustrate the results about their contribution in detail.