Effect of laser irradiation on activation energy, irreversibility field and upper critical magnetic field of bulk MgB2 superconductor

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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.accessioned2019-04-20T21:43:36Z
dc.date.available20.04.201910:49:12
dc.date.available2019-04-20T21:43:36Z
dc.date.issued2016
dc.departmentBayburt Üniversitesien_US
dc.description.abstractIn this study, the role of laser irradiation on the upper critical field (Hc2), the irreversibility field (Hirr) and the activation energy (U0) of bulk MgB2 superconductor was first time investigated with the aid of magnetoresistivity measurements conducted at different applied magnetic fields in a range of 0–15 kOe as a function of temperature from 25 to 40 K. For this aim, a disk shaped MgB2 superconductor was produced and cut into two pieces. One of the pieces was irradiated under high vacuum conditions by using an Nd:YVO4 laser. The obtained results showed an increase in the critical temperature (Tc) by about 1 K after irradiation. Also, the values of Hc2(0) were respectively found to be around 143 and 151 kOe while the values of Hirr(0) were about 122 and 130 kOe for the reference and the irradiated samples. Using the thermally activated flux flow model the dependence of U0 on magnetic field was determined. The maximum U0 values of 0.43 and 0.83 eV in zero magnetic field were respectively obtained for the reference and the irradiated samples. Also, the magnetic field dependence of the critical current density Jc(B) values at different temperatures were slightly increased after the irradiation. These results point out that the superconducting properties of bulk MgB2 can be improved via laser irradiation. © 2016, Springer Science+Business Media New York.en_US
dc.identifier.doi10.1007/s10854-016-4592-4
dc.identifier.endpage6510
dc.identifier.issn0957-4522
dc.identifier.issue6
dc.identifier.scopus2-s2.0-84964961791en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage6502
dc.identifier.urihttps://dx.doi.org/10.1007/s10854-016-4592-4
dc.identifier.urihttps://hdl.handle.net/20.500.12403/616
dc.identifier.volume27
dc.identifier.wosWOS:000377898000135en_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.subjectChemical activation
dc.subjectIrradiation
dc.subjectMagnetic fields
dc.subjectMagnetism
dc.subjectSuperconducting materials
dc.subjectApplied magnetic fields
dc.subjectCritical temperatures
dc.subjectHigh-vacuum conditions
dc.subjectIrreversibility fields
dc.subjectMagnetic field dependences
dc.subjectSuperconducting properties
dc.subjectUpper critical fields
dc.subjectUpper critical magnetic fields
dc.subjectActivation energy
dc.subjectChemical activation
dc.subjectIrradiation
dc.subjectMagnetic fields
dc.subjectMagnetism
dc.subjectSuperconducting materials
dc.subjectApplied magnetic fields
dc.subjectCritical temperatures
dc.subjectHigh-vacuum conditions
dc.subjectIrreversibility fields
dc.subjectMagnetic field dependences
dc.subjectSuperconducting properties
dc.subjectUpper critical fields
dc.subjectUpper critical magnetic fields
dc.subjectActivation energy
dc.titleEffect of laser irradiation on activation energy, irreversibility field and upper critical magnetic field of bulk MgB2 superconductoren_US
dc.typeArticleen_US

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