Abstract
Samples of MgB 2 + x wt% glycine (with x = 0, 2, 5 and 8) were sintered at 800 °C for 30 min. Obvious enhancement of critical current density (J c) over the entire field was obtained in 5 wt% glycine-doped sample, indicating that grain connectivity and pinning effect were both improved. The improvement of J c was attributed to the pinning effect by C substitution, MgO nano-particles, and relatively smaller MgB 2 grains. Besides, 2 wt% glycine could only improve J c at low field, while excessive glycine (above 5 wt%) would lead to unfavorable J c performance.
Original language | English |
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Pages (from-to) | 778-782 |
Number of pages | 5 |
Journal | Materials Chemistry and Physics |
Volume | 136 |
Issue number | 2-3 |
DOIs | |
Publication status | Published - 15 Oct 2012 |
Externally published | Yes |
Keywords
- Electron microscopy
- Sintering
- Superconductivity
- Superconductors