Effect of nano-C doping on the in-situ processed MgB2 tapes

Xianping Zhang; Yanwei Ma*; Aixia Xu; Yulei Jiao; Ling Xiao; S. Awaji; K. Watanabe; Huan Yang; Haihu Wen

doi:10.1088/1742-6596/43/1/025

Effect of nano-C doping on the in-situ processed MgB2 tapes

Superconductivity 2015-06-25 v3

Authors: Xianping Zhang , Yanwei Ma* , Aixia Xu , Yulei Jiao , Ling Xiao , S. Awaji , K. Watanabe , Huan Yang , Haihu Wen

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Abstract

The effect of nano-C doping on the microstructure and superconducting properties of Fe-sheathed MgB2 tapes prepared through the in-situ powder-in-tube method was studied. Heat treatment was performed at a low temperature of 650C for 1 h. Scanning electron microscopy investigation revealed that the smaller grain size of MgB2 in the samples with the C-doping. Further, the a-axis lattice parameter and transition temperature decreased monotonically with increasing doping level, which is due to the C substitution for B. High critical current density Jc values in magnetic fields were achieved in the doped samples because of the very fine-grained microstructure of the superconducting phase obtained with C doping.

Keywords

MgB2 tapes nano-C doping microstructure critical current density superconducting properties powder-in-tube method

Cite

@article{arxiv.cond-mat/0509475,
  title  = {Effect of nano-C doping on the in-situ processed MgB2 tapes},
  author = {Xianping Zhang and Yanwei Ma* and Aixia Xu and Yulei Jiao and Ling Xiao and S. Awaji and K. Watanabe and Huan Yang and Haihu Wen},
  journal= {arXiv preprint arXiv:cond-mat/0509475},
  year   = {2015}
}

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revised manuscript, 4 pages, 4 figures. to be published soon

Effect of nano-C doping on the in-situ processed MgB2 tapes

Abstract

Keywords

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