Influence of magnesium powder and heat treatment on the superconducting properties of MgB2/Fe wires

被引：11
|
作者：
Tan, K. S. [1 ]
Kim, N-K [1 ]
Kim, Y-J [1 ]
Jun, B-H [1 ]
Kim, C-J [1 ]
机构：
[1] Korea Atom Energy Res Inst, Nucl Nano Mat Dev Lab, Taejon 305353, South Korea
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2008年 / 21卷 / 01期
关键词：
D O I：
10.1088/0953-2048/21/01/015015
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The quality of precursor powders is an important factor influencing the superconducting properties and performance of in situ powder-in-tube (PIT) processed MgB2 wire. In this study, the influence of magnesium precursor powders and annealing temperatures on the transition temperatures (T-c) and critical current densities (J(c)) of in situ MgB2/Fe wires was investigated. J(c) enhancement was observed in MgB2/Fe wires when using a smaller particle size of the magnesium precursor powders. The results also show the wire samples annealed at a low temperature of 600 degrees C through a solid-solid state reaction have better J(c) values. In summary, the critical current density increases with decreasing annealing temperatures.
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页数：5
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