Low-Temperature Synthesis of Superconducting Nanocrystalline MgB2

被引：8
|
作者：
Lu, Jun [1 ,2 ]
Xiao, Zhili [1 ,2 ]
Lin, Qiyin [2 ]
Claus, Helmut [2 ]
Fang, Zhigang Zak [3 ]
机构：
[1] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA
[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA
[3] Univ Utah, Dept Met Engn, Salt Lake City, UT 84112 USA
来源：
JOURNAL OF NANOMATERIALS | 2010年 / 2010卷
关键词：
D O I：
10.1155/2010/191058
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Magnesium diboride (MgB2) is considered a promising material for practical application in superconducting devices, with a transition temperature near 40 K. In the present paper, nanocrystalline MgB2 with an average particle size of approximately 70 nm is synthesized by reacting LiBH4 with MgH2 at temperatures as low as 450 degrees C. This synthesis approach successfully bypasses the usage of either elemental boron or toxic diborane gas. The superconductivity of the nanostructures is confirmed by magnetization measurements, showing a superconducting critical temperature of 38.7 K.
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页数：5
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