Effect of Boron powder purity on superconducting properties of bulk MgB2

Authors

Xun Xu, University of WollongongFollow
Dayse dos Santos, University of Wollongong
Jung Ho Kim, University of WollongongFollow
Wai Kong Yeoh, The University Of Sydney
Meng J. Qin, National University of SingaporeFollow
Konstantin K. Konstantinov, University of WollongongFollow
S. X. Dou, University of WollongongFollow

RIS ID

21843

Publication Details

Xu, X., dos Santos, D., Kim, J., Yeoh, W., Qin, M. J., Konstantinov, K. K. & Dou, S. X. (2007). Effect of Boron powder purity on superconducting properties of bulk MgB2. Physica C: Superconductivity and its Applications, 460-462 (Part 1), 602-603.

Abstract

In order to study the influence of the amorphous Boron powder on the superconducting properties, MgB2 bulk samples were prepared using 96% and 99% pure commercial Boron powder as well as 92% commercial Boron powder after purification process. The results showed that the original 96% and the purified 92% powders have larger particle size compared to the pure 99% Boron powder, which leads to reduce magnetic critical current densities. In order to get higher performance MgB2, the purified low grade Boron powder need further control of their microstructure such as smaller particle size to enhance flux pinning from the grain boundaries which represent effective pinning centers.

Grant Number

ARC/DP0770205

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0770205