Critical Current Density and Current Transfer Length of Multifilamentary $\hbox{MgB}_{2}$ Strands of Various Design
Critical Current Density and Current Transfer Length of Multifilamentary $\hbox{MgB}_{2}$ Strands of Various Design
复制标题
各种设计的多丝$hbox{MgB}_{2}$股的临界电流密度和电流传输长度
DOI：
10.1109/tasc.2012.2230293
复制
发表时间：
2013
影响因子：
1.8
通讯作者：
E. Collings
中科院分区：
文献类型：
--
作者：
G. Z. Li;K. Reddy;J. Zwayer;M. A. Kuldell;M. Susner;Y. Yang;M. Sumption;J. Yue;M. Rindfleisch;M. Tomsic;C. Thong;E. Collings
本文制备了一系列高性能管内粉状MgB<sub>2</sub>线材。进行传输电压-电流测量以确定碳掺杂和线束几何形状（例如细丝数量）的影响。对于使用添加 3% C 的 B 粉末的线材，我们样品的最佳 <i>J</i><sub>c</sub> 为 1.0 × 10<sup>5</sup> A/cm<sup>2</sup>（在 4.2 K、7 T 下）。还测量了带有铌化学屏障和蒙乃尔合金外护套的 MgB<sub>2</sub> 短线的电流传输长度。电流传输长度范围为2～12mm，与灯丝数量相关。
In this paper, a series of high-performing powder-in-tube MgB<sub>2</sub> strands have been prepared. Transport voltage-current measurements were performed to determine the effects of C doping and strand geometry such as filament numbers. The best <i>J</i><sub>c</sub> for our samples was 1.0 × 10<sup>5</sup> A/cm<sup>2</sup> at 4.2 K, 7 T, for a strand using B powder with 3% C addition. The current transfer length was also measured for MgB<sub>2</sub> short wires with Nb chemical barrier and Monel outer sheath. The current transfer length ranged from 2 to 12 mm, and had a correlation with the filament numbers.