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Improvement of Jc and Hc2 in MgB2 superconductor with citric acid addition
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zeng, Rong Wang, Jianli Li, Wenxian Shi, Dongqi Horvat, Joseph |
| Copyright Year | 2008 |
| Abstract | This paper reports on the fabrication and characterization of citric acid (CA)-C6H8O7 added MgB2superconductor. The relationships between microstructures, critical current density (Jc), critical temperature (Tc), upper critical field (Hc2), irreversibility field (Hirr), and normal state resistivity for 10 wt% C6H8O7added MgB2samples sintered at temperatures from 650°C to 950°C were systematically studied. A reduction in Tc and in lattice parameter a due to the C substitution and possible oxygen (O) effects occurs with C6H8O7 addition. Jc, Hc2, and Hirr are significantly enhanced, however, with the addition of C6H8O7. All the samples exhibit Jc above 104A/cm2 at 5 K and 8 T. This value is higher than for the un-doped MgB2 by a factor of 9. The significant improvement in the superconducting properties is attributed to the lattice distortion due to the C and possible oxygen (O) substitution for boron, with the C and O coming from the decomposition of C6H8O7. |
| Starting Page | 012215 |
| Ending Page | 012215 |
| Page Count | 1 |
| File Format | PDF HTM / HTML |
| Volume Number | 97 |
| Alternate Webpage(s) | http://ro.uow.edu.au/cgi/viewcontent.cgi?article=5692&context=engpapers |
| Alternate Webpage(s) | https://doi.org/10.1088/1742-6596%2F97%2F1%2F012215 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
