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Electron paramagnetic resonance and Raman spectroscopy studies on carbon-doped MgB2 superconductor nanomaterials

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dc.contributor.coauthorErdem, Emre
dc.contributor.coauthorRepp, Sergej
dc.contributor.coauthorAcar, Selçuk
dc.contributor.coauthorKokal, İlkin
dc.contributor.coauthorHaessler, Wolfgang
dc.contributor.coauthorWeber, Stefan
dc.contributor.departmentDepartment of Chemistry
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.kuauthorBateni, Ali
dc.contributor.kuauthorSomer, Mehmet Suat
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.date.accessioned2024-11-09T13:08:06Z
dc.date.issued2015
dc.description.abstractUndoped and carbon-doped magnesium diboride (MgB2) samples were synthesized using two sets of mixtures prepared from the precursors, amorphous nanoboron, and as-received amorphous carbon-doped nanoboron. The microscopic defect structures of carbon-doped MgB2 samples were systematically investigated using X-ray powder diffraction, Raman and electron paramagnetic resonance spectroscopy. Mg vacancies and C-related dangling-bond active centers could be distinguished, and sp(3)-hybridized carbon radicals were detected. A strong reduction in the critical temperature T-c was observed due to defects and crystal distortion. The symmetry effect of the latter is also reflected on the vibrational modes in the Raman spectra. (C) 2015 AIP Publishing LLC.
dc.description.fulltextYES
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.issue15
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorshipDeutsche Forschungsgemeinschaft (DFG)
dc.description.sponsorshipKoç University Graduate Program
dc.description.sponsorshipKoç University Surface Science and Technology Center (KUYTAM)
dc.description.versionPublisher version
dc.description.volume117
dc.identifier.doi10.1063/1.4918608
dc.identifier.eissn1089-7550
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR00358
dc.identifier.issn0021-8979
dc.identifier.quartileQ2
dc.identifier.scopus2-s2.0-84928348163
dc.identifier.urihttps://doi.org/10.1063/1.4918608
dc.identifier.wos353306900013
dc.keywordsReactive nanostructured carbon
dc.keywordsCritical-Current censity
dc.keywordsPhonon modes
dc.keywordsConversion
dc.keywordsSystem
dc.keywordsWires
dc.keywordsTapes
dc.keywordsFilms
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP) Publishing
dc.relation.grantnoER 662/1-2
dc.relation.ispartofJournal of Applied Physics
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/1379
dc.subjectApplied physics
dc.titleElectron paramagnetic resonance and Raman spectroscopy studies on carbon-doped MgB2 superconductor nanomaterials
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorBateni, Ali
local.contributor.kuauthorSomer, Mehmet Suat
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Sciences
local.publication.orgunit2Department of Chemistry
local.publication.orgunit2Graduate School of Sciences and Engineering
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