Fabrication and superconducting properties of MgB2 composite wires by the PIT method

被引：49
|
作者：
Feng, Y
Zhao, Y
Pradhan, AK
Zhou, L
Zhang, PX
Liu, XH
Ji, P
Du, SJ
Liu, CF
Wu, Y
Koshizuka, N
机构：
[1] NW Inst Nonferrous Met Res, Xian 710016, Peoples R China
[2] ISTEC, Superconduct Res Lab, Koto Ku, Tokyo 1350062, Japan
[3] Univ New S Wales, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia
[4] Univ Virginia, Jesse W Beams Lab, Charlottesville, VA 22901 USA
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2002年 / 15卷 / 01期
关键词：
D O I：
10.1088/0953-2048/15/1/303
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Dense MgB2/CU wires with Ta as a buffer layer were successfully fabricated by the powder-in-tube (PIT) method. The microstructure was investigated by optical microscopy. Magnetization measurements were carried out by using a superconducting quantum interference device (SQUID) magnetometer at magnetic fields up to 7 T from 5 K to 35 K. The transition temperature of the MgB2 wire is around 38.4 K and the irreversibility field is 6.6 T at 5 K. The critical current density as high as 10(5) A cm(-2) (5 K, self-field) and 10(4) A cm(-2) (20 K, 1 T) has been obtained. The results suggest that the powder-in-tube (PIT) process is promising in preparing high-quality MgB2 wires.
引用
收藏
页码：12 / 15
页数：4
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