Investigation of Hot Press and Cold Press Effects on Structural, Electrical and Magnetic Properties of Pyrene Added Bulk MgB2

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dc.contributor.authorErdem, O.
dc.date.accessioned2024-10-04T18:51:11Z
dc.date.available2024-10-04T18:51:11Z
dc.date.issued2024
dc.departmentBayburt Üniversitesien_US
dc.description.abstractIn this paper, the effects of hot pressing and cold pressing on the superconducting properties of pyrene (C16H10) added bulk MgB2 were compared. For this aim, the polycrystalline disk-shaped MgB2 samples with addition of 4 wt % C16H10 powder were fabricated by a pellet/closed tube method at 850 degrees C, after hot pressing at 200 degrees C and cold pressing. The XRD and SEM results showed that although a-lattice parameters reduce for both C16H10 added samples, the average crystallite size increases after cold pressing because of the accumulation and inhomogeneous distribution of C in the MgB2 structure while it reduces for the C16H10 added hot pressed sample. The resistivity measurements showed that the increment of electron scattering is higher for the C16H10 added cold pressed sample than that of the C16H10 added hot pressed one which shows relatively better grain connectivity, and the Tc values of the samples are not appreciably affected by the pressing conditions. From the magnetisation measurements the in-field J(c) values at 10 K and 5.5 T were obtained as 8.41 x 10(3) A/cm(2), 1.62 x 10(4) A/cm(2), 6.90 x 10(3) A/cm(2) and the Hirr values while J(c) = 100 A/cm(2) at 20 K were obtained as 5.99 T, 6.55 T and 6.19 T for the pure sample and the C16H10 added hot and cold pressed samples, respectively. The higher J(c )and H-irr values obtained for the C16H10 added hot pressed sample is because of the homogenous C substitution into MgB2 grains, as compatible with its lower Delta rho value, and thus increased flux pinning ability.en_US
dc.description.sponsorshipScientific Research Coordination Found of Bayburt University [2015/2-03]en_US
dc.description.sponsorshipThis study was supported by the Scientific Research Coordination Found of Bayburt University, with Project No: 2015/2-03. Sample production was carried out at Low Temperature Physics Laboratory in Karadeniz Technical University, Trabzon, Turkiye.en_US
dc.identifier.doi10.1007/s13538-024-01586-9
dc.identifier.issn0103-9733
dc.identifier.issn1678-4448
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-85201713917en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.urihttps://doi.org/10.1007/s13538-024-01586-9
dc.identifier.urihttp://hdl.handle.net/20.500.12403/3420
dc.identifier.volume54en_US
dc.identifier.wosWOS:001295887400001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofBrazilian Journal of Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSuperconductivityen_US
dc.subjectMgB2en_US
dc.subjectHot pressingen_US
dc.subjectCold pressingen_US
dc.subjectPyreneen_US
dc.subjectResistivityen_US
dc.titleInvestigation of Hot Press and Cold Press Effects on Structural, Electrical and Magnetic Properties of Pyrene Added Bulk MgB2en_US
dc.typeArticleen_US

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