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Superconducting Properties of {\rm MgB}_{2} Wire Using Ball-Milled Low Purity Boron

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6 Author(s)
Xun Xu ; Inst. for Supercond. & Electron. Mater., Univ. of Wollongong, Wollongong, NSW, Australia ; Jung Ho Kim ; Yun Zhang ; Yue Zhao
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MgB2/Fe wire samples were prepared by using ball-milled 96% boron (B) powder with strong semi-crystalline phase. We observed samples that contained ball-milled 96% B in comparison with one made from as-supplied commercial 96% B, with the results showing a significant enhancement in the high field transport critical current density (J ct) due to small grain size and better reactivity. However, the inter-grain connectivity became worse, which could lead to poor J ct in low field and an increased level of disorder.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:19 ,  Issue: 3 )

Date of Publication:

June 2009

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