Effects of initial cooling conditions and measurement heights on the levitation performance of bulk MgB2 superconductor at different measurement temperatures

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dc.authorid57206025149
dc.authorid8617961500
dc.authorid56513554300
dc.authorid54390730500
dc.authorid7004642659
dc.contributor.authorErdem O.
dc.contributor.authorOzturk K.
dc.contributor.authorGuner S.B.
dc.contributor.authorCelik S.
dc.contributor.authorYanmaz E.
dc.date.accessioned20.04.201910:49:12
dc.date.accessioned2019-04-20T21:44:16Z
dc.date.available20.04.201910:49:12
dc.date.available2019-04-20T21:44:16Z
dc.date.issued2014
dc.departmentBayburt Üniversitesien_US
dc.description.abstractThe levitation properties of MgB2 prepared by hot press at 200 ° C and then pellet/closed tube method has been investigated. The vertical and lateral levitation forces (Fz and Fx) on a cylindrical NdFeB permanent magnet (PM) below a disk-shaped bulk MgB2 were measured during the vertical and lateral traverses of the PM in different cooling heights (CHs) and measurement heights (MHs) at temperatures of 20, 25 and 30 K to investigate the effect of the initial CH and MH on the levitation performance of MgB2. For temperatures below 30 K, it was observed that Fz increases with increasing CH. However, a minute variation in Fz and a big hysteresis loop are observed at 30 K. From the lateral traverses, it was obtained that the Fz with attractive character increases with decreasing MH and the hysteresis effect increases for small MHs due to the increment of the magnetic field intensity which the sample feels with decreasing MH. In addition, it was seen that the character of Fx varies depending on both MH and measurement temperature. The higher hysteresis obtained in Fx than in Fz during lateral traverses implies that the motion of the flux lines in MgB2 is especially in lateral rather than vertical direction. Finally in this study, it was shown that the levitation performance of MgB2 depends not only on the measurement temperature but also on the CH and MH conditions. These results can be useful for optimizing the levitation performance of MgB2 superconductors for potential applications. © 2014 Springer Science+Business Media New York.en_US
dc.identifier.doi10.1007/s10909-014-1183-8
dc.identifier.endpage39
dc.identifier.issn0022-2291
dc.identifier.issue01.Feb
dc.identifier.scopus2-s2.0-84906666693en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage28
dc.identifier.urihttps://dx.doi.org/10.1007/s10909-014-1183-8
dc.identifier.urihttps://hdl.handle.net/20.500.12403/815
dc.identifier.volume177
dc.identifier.wosWOS:000340886500005en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringer New York LLC
dc.relation.ispartofJournal of Low Temperature Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBulk superconductor
dc.subjectCooling height
dc.subjectMagnetic levitation
dc.subjectMeasurement height
dc.subjectCooling
dc.subjectHysteresis
dc.subjectMagnetic levitation
dc.subjectMagnetic levitation vehicles
dc.subjectBulk superconductors
dc.subjectHysteresis effect
dc.subjectLevitation force
dc.subjectMagnetic-field intensity
dc.subjectMeasurement temperatures
dc.subjectNdFeB permanent magnet
dc.subjectVertical direction
dc.subjectSuperconducting materials
dc.subjectBulk superconductor
dc.subjectCooling height
dc.subjectMagnetic levitation
dc.subjectMeasurement height
dc.subjectCooling
dc.subjectHysteresis
dc.subjectMagnetic levitation
dc.subjectMagnetic levitation vehicles
dc.subjectBulk superconductors
dc.subjectHysteresis effect
dc.subjectLevitation force
dc.subjectMagnetic-field intensity
dc.subjectMeasurement temperatures
dc.subjectNdFeB permanent magnet
dc.subjectVertical direction
dc.subjectSuperconducting materials
dc.titleEffects of initial cooling conditions and measurement heights on the levitation performance of bulk MgB2 superconductor at different measurement temperaturesen_US
dc.typeArticleen_US

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