DC Field | Value | Language |
---|---|---|
dc.contributor.author | Haberkorn, N | - |
dc.contributor.author | Kim, J | - |
dc.contributor.author | Gofryk, K | - |
dc.contributor.author | Ronning, F | - |
dc.contributor.author | Sefat, AS | - |
dc.contributor.author | Fang, L | - |
dc.contributor.author | Welp, U | - |
dc.contributor.author | Kwok, WK | - |
dc.contributor.author | Civale, L | - |
dc.date.accessioned | 2017-07-19T12:21:18Z | - |
dc.date.available | 2017-07-19T12:21:18Z | - |
dc.date.created | 2016-02-03 | - |
dc.date.issued | 2015-05 | - |
dc.identifier.issn | 0953-2048 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/35700 | - |
dc.description.abstract | We investigate the effect of heavy ion irradiation (1.4 GeV Pb) on the vortex matter in Ba (Fe0.92Co0.08)(2)As-2 single crystals by superconducting quantum interference device (SQUID) magnetometry. The defects created by the irradiation are discontinuous amorphous tracks, resulting in an effective track density smaller than 25% of the nominal doses. We observe large increases in the critical current density (J(c)), ranging from a factor of similar to 3 at low magnetic fields to a factor of similar to 10 at fields close to 1 T after irradiation with a nominal fluence of B-Phi= 3.5 T. From the normalized flux creep rates (S) and the Maley analysis, we determine that the J(c) increase can be mainly attributed to a large increment in the pinning energy, from <50 K to approximate to 500 K, while the glassy exponent mu changes from similar to 1.5 to <1. Although the enhancement of J(c) is substantial in the entire temperature range and S is strongly suppressed, the artificial pinning landscape induced by the irradiation does not modify significantly the crossover to fast creep in the field-temperature vortex phase diagram. | - |
dc.language | English | - |
dc.publisher | IOP PUBLISHING | - |
dc.relation.isPartOf | SUPERCONDUCTOR SCIENCE AND TECHNOLODGY | - |
dc.title | Enhancement of the critical current density by increasing the collective pinning energy in heavy ion irradiated Co-doped BaFe2As2 single crystals | - |
dc.type | Article | - |
dc.identifier.doi | 10.1088/0953-2048/28/5/055011 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | SUPERCONDUCTOR SCIENCE AND TECHNOLODGY, v.28, no.5, pp.55011 | - |
dc.identifier.wosid | 000353015700017 | - |
dc.date.tcdate | 2019-03-01 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 55011 | - |
dc.citation.title | SUPERCONDUCTOR SCIENCE AND TECHNOLODGY | - |
dc.citation.volume | 28 | - |
dc.contributor.affiliatedAuthor | Kim, J | - |
dc.identifier.scopusid | 2-s2.0-84927609756 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 12 | - |
dc.description.scptc | 11 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article; Proceedings Paper | - |
dc.subject.keywordPlus | FLUX-CREEP | - |
dc.subject.keywordPlus | VORTEX DYNAMICS | - |
dc.subject.keywordPlus | SUPERCONDUCTOR | - |
dc.subject.keywordPlus | DEPENDENCE | - |
dc.subject.keywordAuthor | iron superconductors | - |
dc.subject.keywordAuthor | heavy ion irradiation | - |
dc.subject.keywordAuthor | vortex dynamics | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physics | - |
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