Enhanced critical current density of MgB2 superconductor synthesized in high magnetic fields

Yanwei Ma; Aixia Xu; Xianping Zhang; Xiaohang Li; S. Awaji; K. Watanabe

doi:10.1143/JJAP.45.L493

Enhanced critical current density of MgB2 superconductor synthesized in high magnetic fields

Superconductivity 2009-11-11 v3 Materials Science

Authors: Yanwei Ma , Aixia Xu , Xianping Zhang , Xiaohang Li , S. Awaji , K. Watanabe

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Abstract

The effect of high magnetic fields on the current carrying properties of both MgB2 bulks and Fe-sheathed tapes was investigated following different thermal sequences. It is found that application of a large magnetic field during processing results in the quite uniform microstructure and the better connectivity between the MgB2 grains. As a result, the Jc of these samples has shown much higher value than that of the MgB2 samples in the absence of magnetic field. The possible mechanism of the Jc enhancement under an external magnetic field is also discussed.

Keywords

MgB2 superconductor critical current density high magnetic fields microstructure Fe-sheathed tapes

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@article{arxiv.cond-mat/0601245,
  title  = {Enhanced critical current density of MgB2 superconductor synthesized in high magnetic fields},
  author = {Yanwei Ma and Aixia Xu and Xianping Zhang and Xiaohang Li and S. Awaji and K. Watanabe},
  journal= {arXiv preprint arXiv:cond-mat/0601245},
  year   = {2009}
}

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Presented at ISS2005, Tsukuba, 24-26 Oct., 2005; Revised version

Enhanced critical current density of MgB2 superconductor synthesized in high magnetic fields

Abstract

Keywords

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