Investigation of some physical properties of Gd added Bi-2223 superconductors

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dc.authorid0000-0002-3944-0367
dc.contributor.authorTerzioğlu, Cabir
dc.date.accessioned2021-06-23T19:28:22Z
dc.date.available2021-06-23T19:28:22Z
dc.date.issued2011
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractX-ray powder diffraction (XRD), scanning electron microscopy (SEM), dc electrical resistivity, critical current density and static microindentation measurements are performed to investigate some physical properties of Bi(1.8)Pb(0.35)Sr(1.9)Ca(2.1)Cu(3)Gd(x)O(y) superconducting samples with x = 0.0, 0.1, 0.3 and 0.5. We observe from the transport measurements that, for the Gd added sample, the critical transition temperature (T(c)) and the critical current density (J(c)) are decreased in comparison with that of undoped sample. In addition, surface morphology and grain connectivity of the samples are degraded and the high-T(c) phase of the samples decreases with increasing Gd addition. The indentation load versus diagonal length of the samples under different indentation loads in the range of 0.245-2.940 N are measured. The microindentation measurements showed that, for the Gd added sample, the load dependent (apparent) microhardness value (H(v)) is lower in comparison with that of the pure sample (x = 0). The values of H(v) are found to be load dependent. In addition, we extract the load independent (true) microhardness using the Kick's law, proportional specimen resistance (PSR), modified proportional specimen resistance (MPSR) and the Hays-Kendall (HK) approach and compare the true hardness with the apparent hardness. The possible reasons for the observed degradation in microstructure, superconducting and mechanical properties due to Gd addition are discussed. (C) 2010 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.jallcom.2010.08.105
dc.identifier.endpage93en_US
dc.identifier.issn0925-8388
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-77958057660en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage87en_US
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2010.08.105
dc.identifier.urihttps://hdl.handle.net/20.500.12491/7003
dc.identifier.volume509en_US
dc.identifier.wosWOS:000284390000018en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorTerzioğlu, Cabir
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofJournal Of Alloys And Compoundsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectGd Additionen_US
dc.subjectMicrohardnessen_US
dc.subjectIndentation Size Effecten_US
dc.subjectKick's Lawen_US
dc.subjectMPSR Model and HK Modelen_US
dc.titleInvestigation of some physical properties of Gd added Bi-2223 superconductorsen_US
dc.typeArticleen_US

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