Improved Jc of MgB2 superconductor by ball milling using different media

Authors

Xun Xu, University of WollongongFollow
Jung Ho Kim, University of WollongongFollow
Wai Kong Yeoh, The University Of Sydney
Yun Zhang, University of WollongongFollow
S. X. Dou, University of WollongongFollow

RIS ID

15980

Publication Details

Xu, X., Kim, J., Yeoh, W., Zhang, Y. & Dou, S. X. (2006). Improved Jc of MgB2 superconductor by ball milling using different media. Superconductor Science and Technology, 19 (11), L47-L50.

Abstract

In this paper, the effects of ball milling B powders using different media, such as acetone, ethanol, and toluene on the superconducting properties of MgB₂ have been studied. It was observed that toluene medium was the most effective of them all for enhancing J_c. J_c was estimated to be 5 x 10³ A/cm² at 8 T and 5 K. This value is much higher than that of pure MgB₂ that was not ball milled, by a factor of 20. It was considered that ball-milled B using toluene leads to smaller MgB₂ grains, resulting in enhanced J_c at low operating temperature and high field.