Critical Currents of 100-m Class Ag-Sheathed Sr_0.6K_0.4Fe₂As₂ Tape Under Various Temperatures, Magnetic Fields, and Angles

Strong flux pinning and anomalous anisotropy of Sr0.6K0.4Fe2As2 superconducting tapes

“…The transport J c approaches 1.0 × 10 5 A cm −2 and 8.2 × 10 4 A cm −2 at 10 T and 14 T, respectively, demonstrating weak field dependence. The J c value is improved to 0.1 MA cm −2 by hot pressing method and comparable to the J c preformance of other pnictide tapes [14,15,[24][25][26]. A low J c anisotropy of 1.1-1.4 has been observed at 4.2 K and 10 T in our hot-pressed tapes [16,20].…”

Critical current performance of Bi-2223 HTS tape in temperature range above liquid nitrogen vaporization temperature

“…本 实 验 在 样 品 临 界 电 流 测 量 中 采 用 四 引 线 法 [16,24,25] , 通过两根电流引线输入一个定值电流, 同时 3.5 T. 样品腔是自行设计的可自动推进、旋转和样品 温度控制的真空绝热腔体 [26] , 通过控制台也可以手动…”

First performance test of the iron-based superconducting racetrack coils at 10 T

“…The iron-based superconductor (IBS), which was 6 Authors contributed equally to this work. 7 Authors to whom any correspondence should be addressed. discovered in 2008, has attracted wide interest for both basic research and practical utilization.…”

“…It is a promising candidate for high field applications because of its good properties such as the high upper critical field, moderate critical temperature, strong current carrying capacity, and lower anisotropy. In 2016, the Institute of Electrical Engineering, Chinese Academy of Sciences (IEE, CAS) has successfully manufactured the 1st 100-m long 7-filamentary Sr 1 −x K x Fe 2 As 2 (Sr122) IBS tape using the low-cost and relatively simple powder-in-tube process, which demonstrates the great potential for large-scale manufacture [4][5][6][7][8][9]. In 2019, the IBS solenoid coils were fabricated and tested at 24 T successfully, indicating the possibility of fabricating practical IBS coils [4].…”