Influence of coronene addition on some superconducting properties of bulk MgB2

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dc.authorid57206025149
dc.authorid55861111700
dc.contributor.authorErdem O.
dc.contributor.authorKirat G.
dc.date.accessioned20.04.201910:49:12
dc.date.accessioned2019-04-20T21:43:02Z
dc.date.available20.04.201910:49:12
dc.date.available2019-04-20T21:43:02Z
dc.date.issued2018
dc.departmentBayburt Üniversitesien_US
dc.description.abstractThis study reports the effect of coronene (C24H12) addition on some superconducting properties such as critical temperature (Tc), critical current density (Jc), flux pinning force density (Fp), irreversibility field (Hirr), upper critical magnetic field (Hc2), and activation energy (U0), of bulk MgB2 superconductor by means of magnetisation and magnetoresistivity measurements. Disk-shaped polycrystalline MgB2 samples with varying C24H12 contents of 0, 2, 4, 6, 8, 10 wt%, were produced at 850 °C in Ar atmosphere. The obtained results show an increase in field-Jc values at 10 and 20 K resulting from the strengthened flux pinning, and a decrease in critical temperature (Tc) because of C substitution into MgB2 lattice, with increasing amount of C24H12 powder. The Hc2(0) and Hirr(0) values are respectively found as 144, 181, 172 kOe, and 128, 161, 145 kOe for pure, 4 wt% and 10 wt% C24H12 added samples. The U0 depending on the magnetic field curves were plotted using thermally activated flux flow model. The maximum U0 values are respectively obtained as 0.20, 0.23 and 0.12 eV at 30 kOe for pure, 4 wt% and 10 wt% C24H12 added samples. As a result, the superconducting properties of bulk MgB2 at high fields was improved using C24H12, active carbon source addition, because of the presence of uniformly dispersed C particles with nanometer order of magnitude, and acting as effective pinning centres in MgB2 structure. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.en_US
dc.identifier.doi10.1007/s10854-018-9816-3
dc.identifier.endpage17233
dc.identifier.issn0957-4522
dc.identifier.issue20
dc.identifier.scopus2-s2.0-85051297339en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage17222
dc.identifier.urihttps://dx.doi.org/10.1007/s10854-018-9816-3
dc.identifier.urihttps://hdl.handle.net/20.500.12403/352
dc.identifier.volume29
dc.identifier.wosWOS:000445428900016en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringer New York LLC
dc.relation.ispartofJournal of Materials Science: Materials in Electronicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectActivation energy
dc.subjectFlux pinning
dc.subjectMagnetic fields
dc.subjectTechnetium compounds
dc.subjectTemperature
dc.subjectActive carbon source
dc.subjectBulk MgB2 superconductors
dc.subjectCritical temperatures
dc.subjectFlux pinning force
dc.subjectIrreversibility fields
dc.subjectSuperconducting properties
dc.subjectThermally activated
dc.subjectUpper critical magnetic fields
dc.subjectMagnesium compounds
dc.subjectActivation energy
dc.subjectFlux pinning
dc.subjectMagnetic fields
dc.subjectTechnetium compounds
dc.subjectTemperature
dc.subjectActive carbon source
dc.subjectBulk MgB2 superconductors
dc.subjectCritical temperatures
dc.subjectFlux pinning force
dc.subjectIrreversibility fields
dc.subjectSuperconducting properties
dc.subjectThermally activated
dc.subjectUpper critical magnetic fields
dc.subjectMagnesium compounds
dc.titleInfluence of coronene addition on some superconducting properties of bulk MgB2en_US
dc.typeArticleen_US

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