Improved Irreversibility Behaviour and Critical Current Density in MgB2-Diamond Nanocomposites

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Abstract
MgB2-diamond nanocomposite superconductors have been synthesized by addition of nanodiamond powder. Microstructural analysis shows that the nanocomposite superconductor consists of tightly packed MgB2 nanograins (~50-100 nm) with highly dispersed and uniformly distributed diamond nanoparticles (~10-20 nm) inside the grains. The Jc-H and Hiir-T characteristics have been significantly improved in this MgB2-diamond nanocomposite, compared to MgB2 bulk materials prepared by other techniques. Also, the Jc value of 1x104 A/cm2 at 20 K and 4 T and the Hirr value of 6.4 T at 20 K have been achieved.
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Author(s)
Zhao, Yong
Cheng, Cui
Rui, X
Zhang, H
Munroe, Paul
Zeng, H
Koshizuka, N
Murakami, M
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Publication Year
2003
Resource Type
Journal Article
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UNSW Faculty
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