DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, JH | - |
dc.contributor.author | Oh, S | - |
dc.contributor.author | HEO, YOON UK | - |
dc.contributor.author | Hata, S | - |
dc.contributor.author | Kumakura, H | - |
dc.contributor.author | Matsumoto, A | - |
dc.contributor.author | Mitsuhara, M | - |
dc.contributor.author | Choi, S | - |
dc.contributor.author | Shimada, Y | - |
dc.contributor.author | Maeda, M | - |
dc.contributor.author | MacManus-Driscoll, JL | - |
dc.contributor.author | Dou, SX | - |
dc.date.accessioned | 2021-09-03T04:09:25Z | - |
dc.date.available | 2021-09-03T04:09:25Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2012-01 | - |
dc.identifier.issn | 1884-4049 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/106939 | - |
dc.description.abstract | Increasing dissipation-free supercurrent has been the primary issue for practical application of superconducting wires. For magnesium diboride, MgB2, carbon is known to be the most effective dopant to enhance high-field properties. However, the critical role of carbon remains elusive, and also low-field critical current density has not been improved. Here, we have undertaken malic acid doping of MgB2 and find that the microscopic origin for the enhancement of high-field properties is due to boron vacancies and associated stacking faults, as observed by high-resolution transmission electron microscopy and electron energy loss spectroscopy. The carbon from the malic acid almost uniformly encapsulates boron, preventing boron agglomeration and reducing porosity, as observed by three-dimensional X-ray tomography. The critical current density either exceeds or matches that of niobium titanium at 4.2 K. Our findings provide atomic-level insights, which could pave the way to further enhancement of the critical current density of MgB2 up to the theoretical limit. NPG Asia Materials (2012) 4, e3; doi:10.1038/am.2012.3; published online 18 January 2012 | - |
dc.language | English | - |
dc.publisher | Nature Publishing Group | - |
dc.relation.isPartOf | NPG Asia Materials | - |
dc.title | Microscopic role of carbon on MgB2 wire for critical current density comparable to NbTi | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/am.2012.3 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | NPG Asia Materials, v.4 | - |
dc.identifier.wosid | 000300721500003 | - |
dc.citation.title | NPG Asia Materials | - |
dc.citation.volume | 4 | - |
dc.contributor.affiliatedAuthor | HEO, YOON UK | - |
dc.identifier.scopusid | 2-s2.0-84859297180 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | UPPER CRITICAL FIELDS | - |
dc.subject.keywordPlus | SUPERCONDUCTING PROPERTIES | - |
dc.subject.keywordPlus | IRREVERSIBILITY FIELD | - |
dc.subject.keywordPlus | TAPES | - |
dc.subject.keywordAuthor | carbon role | - |
dc.subject.keywordAuthor | densification | - |
dc.subject.keywordAuthor | 3D tomogram | - |
dc.subject.keywordAuthor | MgB2 | - |
dc.subject.keywordAuthor | TEM | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Materials Science | - |
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