Influence of magnetic fields on hysteretic ac losses in bulk MgB2 superconductor investigated by using Hall probe ac susceptibility method

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dc.contributor.authorVarilci, Ahmet
dc.date.accessioned2021-06-23T19:20:19Z
dc.date.available2021-06-23T19:20:19Z
dc.date.issued2007
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractWe report the results of an investigation of the influence of magnetic fields on hysteretic ac losses in bulk MgB2 superconductor by using Hall probe ac susceptibility. The external magnetic field in this study had an ac part with frequency 10 Hz and magnitude in the range 240 - 1200 A m(-1) and no dc part. We have measured the imaginary part of the magnetic susceptibility and analysed data by using Bean's critical state model of cylindrical geometry for four different temperature values 39.55, 39.51, 39.47 and 39.41 K. The result of this analysis indicates that Bean's model is adequate to explain the experimental findings. Calculated hysteretic ac loss versus applied magnetic field curve is given by using the critical state model. We have also measured the magnetization versus applied magnetic field and determined the first critical magnetic field of a MgB2 sample as 500 A m(-1) at 35 K.en_US
dc.identifier.doi10.1088/0953-2048/20/4/016
dc.identifier.endpage400en_US
dc.identifier.issn0953-2048
dc.identifier.issn1361-6668
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-34249061201en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage397en_US
dc.identifier.urihttps://doi.org/10.1088/0953-2048/20/4/016
dc.identifier.urihttps://hdl.handle.net/20.500.12491/6096
dc.identifier.volume20en_US
dc.identifier.wosWOS:000245870200020en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorVarilci, Ahmet
dc.language.isoenen_US
dc.publisherIop Publishing Ltden_US
dc.relation.ispartofSuperconductor Science & Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectHall Probeen_US
dc.titleInfluence of magnetic fields on hysteretic ac losses in bulk MgB2 superconductor investigated by using Hall probe ac susceptibility methoden_US
dc.typeArticleen_US

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