Publication Details

This article was originally published as Xu, X, Kim, JH, Yeoh, WK, Rindfleisch, M, Tomsic, M, dos Santos, DI and Dou, SX, Influence of Ball-Milled Low Purity Boron Powder on the Superconductivity of MgB2, IEEE Transactions on Applied Superconductivity, 17(2), 2007, 2782-2785. Copyright 2007 IEEE.


MgB2 samples were prepared using as-supplied commercial 96% boron with strong crystalline phase and the same 96% boron (B) after ball milling. The effects of the properties of the starting B powder on the superconductivity were evaluated. We observed that samples using ball-milled 96% B, in comparison with the one made from the as-supplied 96% B, were characterized by small grain size, broadened full width at half maximum (FWHM), and enhanced magnetic critical current density ( ). reached 2 103 Acm 2 at 5 K and 8 T. The improved pinning of these samples seems to be caused by enhanced grain boundary pinning at high field.

Included in

Engineering Commons



Link to publisher version (DOI)