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 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 language | English |
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Article number | 025 |
Pages (from-to) | 99-102 |
Number of pages | 4 |
Journal | Journal of Physics: Conference Series |
Volume | 43 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2006 Jun 1 |
ASJC Scopus subject areas
- Physics and Astronomy(all)