Superconducting properties of MgB2 wire using ball milled low purity boron

Authors

Xun Xu, University of WollongongFollow
Jung Ho Kim, University of WollongongFollow
Yun Zhang, University of WollongongFollow
Yue Zhao, University of WollongongFollow
Matthew Rindfleisch, Nuclear Hyper Tech Research, Inc
Michael Tomsic, Hyper Tech Research, Inc.,

RIS ID

31489

Publication Details

Xu, X., Kim, J. Ho., Zhang, Y., Zhao, Y., Rindfleisch, M. & Tomsic, M. (2009). Superconducting properties of MgB2 wire using ball milled low purity boron. IEEE Transactions on Applied Superconductivity, 19 (3), 2714-2717.

Abstract

MgB_2/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.