Impact of oxygen doping on AC impedance, complex dielectric and electrical modulus spectra of a Hg-Ba-Ca-Cu-O ceramic

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dc.contributor.authorAslan Çataltepe, Özden
dc.contributor.authorGüven Özdemir, Zeynep
dc.contributor.authorKılıç, Mehmet
dc.contributor.authorOnbaşlı, Ülker
dc.date.accessioned2024-06-13T20:18:30Z
dc.date.available2024-06-13T20:18:30Z
dc.date.issued2019
dc.departmentFakülteler, Mühendislik Fakültesi, Mekatronik Mühendisliği Bölümü
dc.description.abstractIn this study, the AC impedance, the complex dielectric function, and the complex electric modulus properties of mercury based copper oxide layered cuprates, which have superconducting properties below the critical transition temperature, have been investigated at room temperature. The HgBa2Ca2Cu3O8+x samples were synthesized by a conventional, solid state reaction preparation method with an identical stoichiometric ratio. The varied oxygen content of the sample was obtained by oxygen annealing. The AC impedance and the related dielectric and electric modulus properties of non-oxygen doped (i.e. as grown) and optimum oxygen doped HgBa2Ca2Cu3O8+x samples, was measured by an impedance analyzer at room temperature within the frequency interval of 10 Hz-10 MHz. AC impedance spectroscopy analyses of the samples suggest Koop's bilayer model for the structure of Hg-based perovskites. Additionally, the optimally oxygen doped process increased grain and grain boundary resistance along with decreasing grain size. Moreover, AC conductivity results have also confirmed the increased resistive behavior of the sample due to oxygen doping. Furthermore, complex dielectric function analyses have determined an oxygen doping induced negative dielectric constant for the mercury cuprates. In this context, optimally oxygen doped mercury cuprate has a promising potential for metamaterial coating applications.
dc.description.sponsorshipIstanbul Gedik University Scientific Research Projects Coordination Department [GDK201702-BA004]
dc.identifier.doi10.3139/120.111372
dc.identifier.endpage689
dc.identifier.issn0025-5300
dc.identifier.issn2195-8572
dc.identifier.issue7
dc.identifier.scopus2-s2.0-85072322421
dc.identifier.scopusqualityQ2
dc.identifier.startpage685
dc.identifier.urihttps://doi.org/10.3139/120.111372
dc.identifier.urihttps://hdl.handle.net/11501/1409
dc.identifier.volume61
dc.identifier.wosWOS:000478758500012
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorAslan Çataltepe, Özden
dc.institutionauthorid0000-0003-4520-9839
dc.language.isoen
dc.publisherWalter de Gruyter GmbH
dc.relation.ispartofMaterials Testing
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectPerovskites
dc.subjectSolid State Synthesis
dc.subjectDielectric Properties
dc.subjectScanning Electron Microscopy
dc.subjectNegative Dielectric Constant
dc.titleImpact of oxygen doping on AC impedance, complex dielectric and electrical modulus spectra of a Hg-Ba-Ca-Cu-O ceramic
dc.typeArticle

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