Abstract
We studied the Ti doping effect on the superconducting properties and microstructure of sintered MgB2 bulk polycrystals. Using Ti as a sintering assistant, we have fabricated MgB2 bulk materials consisting of fine 10 nm scale particles and achieved a high Jc of 1 MA/cm2 in self-field and 3 × 105 A/cm2 in 1 T at 20 K. The large enhancement of Jc is explained by the excellent connection between grains and the high density of pinning centers served by both grain boundaries and MgO nanoparticles.
Original language | English |
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Pages (from-to) | 437-443 |
Number of pages | 7 |
Journal | Europhysics Letters |
Volume | 57 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2002 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)