Carbon doping induced imperfections on MgB2 superconducting wire

Carbon is known to be the most effective dopant for magnesium diboride, MgB 2 , especially for enhancing high-field electrical properties. Carbon increases the impurity scattering rate, and this, combined with the two-band nature of MgB 2 , raises the upper critical field and thereby the high-field...

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Bibliographic Details
Published in:Journal of analytical science and technology 2015-03, Vol.6 (1), p.11-11, Article 11
Main Authors: Kim, Jung Ho, Choi, Seyong
Format: Article
Language:English
Subjects:
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Monitoring/Environmental Analysis
Review
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Summary:Carbon is known to be the most effective dopant for magnesium diboride, MgB 2 , especially for enhancing high-field electrical properties. Carbon increases the impurity scattering rate, and this, combined with the two-band nature of MgB 2 , raises the upper critical field and thereby the high-field critical current. In addition, microscopic analysis has shown that carbon doping induces crystalline imperfections as the origin of impurity scattering. Herein, further detailed transmission electron microscopy analysis has been applied to find more clues for understanding the role of carbon. Graphical abstract High-performance MgB 2 superconductor wire.
ISSN:2093-3371
2093-3371
DOI:10.1186/s40543-015-0048-3