Abstract
Pure MgB2 bulks of different densities were synthesized by direct Mg-diffusion method. It is found that the connectivity was significantly improved since the current-carrying effective area was improved by the diffusion method, hence the self-field critical current density, Jc, was significantly improved comparing with conventional porous MgB2 bulks made by in situ method. A sample reacted at 850 °C for 10 h exhibited J c of 1.2 MA/cm2 at 20 K in self-field.
Original language | English |
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Pages (from-to) | S669-S670 |
Number of pages | 2 |
Journal | Physica C |
Volume | 470 |
Issue number | Suppl. 1 |
DOIs | |
Publication status | Published - 2010 |