Critical Current Density and Current Transfer Length of Multifilamentary MgB2 Strands of Various Design

被引：12

作者：

Li, G. Z. ^{[1
]}

Reddy, K. M. ^{[1
]}

Zwayer, J. B. ^{[1
]}

Kuldell, M. A. ^{[1
]}

Susner, M. A. ^{[1
]}

Yang, Y. ^{[1
]}

Sumption, M. D. ^{[1
]}

Yue, J. J. ^{[2
]}

Rindfleisch, M. A. ^{[2
]}

Tomsic, M. J. ^{[2
]}

Thong, C. J. ^{[2
]}

Collings, E. W. ^{[1
]}

机构：

[1] Ohio State Univ, Dept Mat Sci & Engn, Ctr Superconducting & Magnet Mat, Columbus, OH 43210 USA

[2] Hyper Tech Res Inc, Columbus, OH 43228 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2013年 / 23卷 / 03期

关键词：

Critical current density; current transfer length; magnesium diboride; n-value; UPPER CRITICAL-FIELD; POLYCRYSTALLINE MGB2; WIRES; SUPERCONDUCTORS; ANISOTROPY;

D O I：

10.1109/TASC.2012.2230293

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a series of high-performing powder-in-tube MgB2 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 J(c) for our samples was 1.0 x 10(5) A/cm(2) at 4.2 K, 7 T, for a strand using B powder with 3% C addition. The current transfer length was also measured for MgB2 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.

引用

页数：4

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