Electrical Properties and Impedance Spectroscopy of Pure and Copper-Oxide-Added Potassium Sodium Niobate Ceramics

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dc.contributor.authorAlkoy, Ebru Mensur
dc.contributor.authorBerksoy-Yavuz, Ayse
dc.date.accessioned2024-07-12T21:47:24Z
dc.date.available2024-07-12T21:47:24Z
dc.date.issued2012en_US
dc.departmentMaltepe Üniversitesien_US
dc.description.abstractPure and 1 mol% CuO-added lead-free potassium sodium niobate K0.5Na0.5NbO3 (KNN) ceramics were prepared by the conventional solid-state calcination method. Copper oxide was mainly used as a sintering aid in the KNN structure. Microstructural analyses clearly showed that the CuO formed a secondary phase at the grain boundaries. Impedance spectroscopy was used as a tool to analyze the electrical behavior of KNN ceramics as a function of frequency from 100 Hz to 10 MHz at various temperatures. The impedance studies proved that CuO led to the formation of a secondary grain boundary phase, as well as creation of highly mobile point defects. The relaxation time of copper-added samples was less than that of pure KNN. This shorter time indicated a higher space charge mobility for CuO-added samples. The thermal activation energy for relaxation of charge carriers (E-g) was calculated as 0.73 eV for CuO-added samples.en_US
dc.description.sponsorshipScientific and Technical Research Council of Turkey (TUBITAK) [109M038]en_US
dc.description.sponsorshipThis work was financially supported by the Scientific and Technical Research Council of Turkey (TUBITAK) through project no. 109M038.en_US
dc.identifier.doi10.1109/TUFFC.2012.2438
dc.identifier.endpage2128en_US
dc.identifier.issn0885-3010
dc.identifier.issn1525-8955
dc.identifier.issue10en_US
dc.identifier.pmid23143562en_US
dc.identifier.scopus2-s2.0-84869458995en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage2121en_US
dc.identifier.urihttps://dx.doi.org/10.1109/TUFFC.2012.2438
dc.identifier.urihttps://hdl.handle.net/20.500.12415/8039
dc.identifier.volume59en_US
dc.identifier.wosWOS:000310896600001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoenen_US
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INCen_US
dc.relation.ispartofIEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROLen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmzKY01214
dc.titleElectrical Properties and Impedance Spectroscopy of Pure and Copper-Oxide-Added Potassium Sodium Niobate Ceramicsen_US
dc.typeArticle
dspace.entity.typePublication

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