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

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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 650°C 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.

Original languageEnglish
Article number025
Pages (from-to)99-102
Number of pages4
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2006 Jun 1


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