Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1499390 | Scripta Materialia | 2012 | 4 Pages |
Abstract
A significant enhancement of critical current density (Jc) was obtained in MgB2 + 3 wt.% glycine samples with a large amount of MgO. The improvements in Jc and in the irreversible magnetic field (Hirr) are attributed to the pinning effects of high C-substitution level, nanoscale MgO, and to the even boundaries of small grains. This doping method overcomes the degradation of Jc under a low field in previously reported SiC-doped samples. Moreover, the formation of MgO was demonstrated to be the result of the reactions between Mg, CO2 and O2.
Related Topics
Physical Sciences and Engineering
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Authors
Qi Cai, Yongchang Liu, Zongqing Ma, Liming Yu,