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

Y. Zhao·X. F. Rui·C. H. Cheng·H. Zhang·P. Munroe·H. M. Zeng·N. Koshizuka·M. Murakami
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Abstract

MgB2-diamond nanocomposite superconductors have been synthesized by addition of nano-diamond powder. Microstructural analysis shows that the nanocomposite superconductor consists of tightly-packed MgB2 nano-grains (~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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Y. Zhao, X. F. Rui, C. H. Cheng, H. Zhang, P. Munroe, H. M. Zeng, N. Koshizuka, M. Murakami. 2003-02-18. Improved Irreversibility Behaviour and Critical Current Density in MgB2-Diamond Nanocomposites. https://doi.org/10.1063/1.1606884

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