Effect of Er doping on the superconducting properties of porous MgB2

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dc.authorid57206025149
dc.authorid7004642659
dc.contributor.authorErdem O.
dc.contributor.authorYanmaz E.
dc.date.accessioned20.04.201910:49:12
dc.date.accessioned2019-04-20T21:43:54Z
dc.date.available20.04.201910:49:12
dc.date.available2019-04-20T21:43:54Z
dc.date.issued2015
dc.departmentBayburt Üniversitesien_US
dc.description.abstractMgB2 bulk sample with porous structure was produced by using the in-situ solid-state reaction method under argon (Ar) atmosphere of 10 bar. Elemental Er in powder form was doped into MgB2 with different compositions (Mg1-xErx)B2, where x = 0.00, 0.03 and 0.05, in order to investigate the effect of rare-earth (RE) element Er on the structural and electromagnetic properties of porous MgB2. The Er-doped samples result in small grain size structure compared to the undoped one. The lattice constants a and c of the doped samples, determined from X-ray diffraction (XRD) analysis, increase with the increasing Er content, and consequently the superconducting transition temperature (Tonsetc) of MgB2, determined from resistivity measurements, is slightly suppressed. Also, the upper critical field (Bc2), the irreversibility field (Birr) and the critical current density (Jc) values are significantly enhanced in the doped samples. For the best sample (x = 0.03), at 15 K under a magnetic field of 4 T, the Jc value reaches 2.4×104 A cm-2, which is higher than that of the porous sample by an order of 103, and the Birr value at 20 K reaches 9.7 T. These results imply that the RE element Er fills the pores, enhances the density and the grain connectivity. Hence, the superconducting properties of the porous MgB2 sample improve by Er doping.en_US
dc.identifier.doi10.1007/s12034-014-0810-y
dc.identifier.endpage93
dc.identifier.issn0250-4707
dc.identifier.issue1
dc.identifier.scopus2-s2.0-84923596246en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage89
dc.identifier.urihttps://dx.doi.org/10.1007/s12034-014-0810-y
dc.identifier.urihttps://hdl.handle.net/20.500.12403/712
dc.identifier.volume38
dc.identifier.wosWOS:000350801000013en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIndian Academy of Sciences
dc.relation.ispartofBulletin of Materials Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject(Mg1-xErx)B2
dc.subjectCritical current density
dc.subjectIrreversibility field
dc.subjectSuperconductivity
dc.subjectUpper critical field
dc.subjectCritical current density (superconductivity)
dc.subjectErbium compounds
dc.subjectLattice constants
dc.subjectMagnesium
dc.subjectSolid state reactions
dc.subjectSuperconducting transition temperature
dc.subjectSuperconductivity
dc.subject(Mg<sub>1-x</sub>Er<sub>x</sub>)B<sub>2</sub>
dc.subjectElectromagnetic properties
dc.subjectGrain connectivity
dc.subjectIrreversibility fields
dc.subjectResistivity measurement
dc.subjectSolid state reaction method
dc.subjectSuperconducting properties
dc.subjectUpper critical fields
dc.subjectErbium
dc.subject(Mg1-xErx)B2
dc.subjectCritical current density
dc.subjectIrreversibility field
dc.subjectSuperconductivity
dc.subjectUpper critical field
dc.subjectCritical current density (superconductivity)
dc.subjectErbium compounds
dc.subjectLattice constants
dc.subjectMagnesium
dc.subjectSolid state reactions
dc.subjectSuperconducting transition temperature
dc.subjectSuperconductivity
dc.subject(Mg<sub>1-x</sub>Er<sub>x</sub>)B<sub>2</sub>
dc.subjectElectromagnetic properties
dc.subjectGrain connectivity
dc.subjectIrreversibility fields
dc.subjectResistivity measurement
dc.subjectSolid state reaction method
dc.subjectSuperconducting properties
dc.subjectUpper critical fields
dc.subjectErbium
dc.titleEffect of Er doping on the superconducting properties of porous MgB2en_US
dc.typeArticleen_US

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