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dc.contributor.authorCoşkun, Mustafa
dc.contributor.authorPolat, Özgür
dc.contributor.authorCoşkun, Fatih Mehmet
dc.contributor.authorDurmus, Zehra
dc.contributor.authorÇağlar, Müjdat
dc.contributor.authorTurut, Abdülmecit
dc.date.accessioned2019-10-20T09:03:01Z
dc.date.available2019-10-20T09:03:01Z
dc.date.issued2018
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.urihttps://dx.doi.org/10.1016/j.jallcom.2018.01.022
dc.identifier.urihttps://hdl.handle.net/11421/16597
dc.descriptionWOS: 000425494200119en_US
dc.description.abstractPerovskite oxide materials, especially perovskite lanthanum chromium oxide, LaCrO3 (LCO) have taken considerable attention among the scientists due to the changing optical, electrical, dielectric and magnetic properties depending on doping via various elements. In this study, the LCO and iridium (Ir) doped LCO (LaCr1-xIrxO3) (x = 0.10) compounds were synthesized using solid-state reaction method. Scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS) have been employed to study particle morphologies and oxidation states of synthesized powders, respectively. Frequency-depended electrical/dielectric properties of perovskite oxide samples were performed in wide range frequency (1Hz-10 MHz) and temperature (-100 degrees C to +100 degrees C) using dielectric/impedance spectrometer. Electrical measurements have underscored that the dielectric constant of LCO compound dramatically decreased after doped with Ir. Furthermore, it was observed that ac conductivity and capacitance value of LCO decreased while impedance increased after Ir doping due to i) Ir occupation in Cr sites and ii) lattice distortion owing to doping larger ion Ir4+ into smaller Cr3+ ion in the LCO lattice. Finally, overlapping large polaron tunneling (OLPT) and quantum mechanical tunneling (QMT) conduction mechanisms were suggested for LCO while the correlated barrier hopping (CBH) and QMT conduction mechanisms were observed for Ir doped LCO compound. Moreover, the activation energy values have been calculated by employing both f(max) vs. 1/T and sigma(dc) vs. 1/T plots. It has been shown those energy values are in good agreement with each other for LCO and Ir doped LCO samples at various temperature rangesen_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TOBITAK) [116F025]en_US
dc.description.sponsorshipThis work was supported by The Scientific and Technological Research Council of Turkey (TOBITAK) through Grant No: 116F025en_US
dc.language.isoengen_US
dc.publisherElsevier Science Saen_US
dc.relation.isversionof10.1016/j.jallcom.2018.01.022en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectLacro3en_US
dc.subjectIren_US
dc.subjectDielectric Propertiesen_US
dc.subjectConductivityen_US
dc.subjectImpedance Spectroscopyen_US
dc.titleFrequency and temperature dependent electrical and dielectric properties of LaCrO3 and Ir doped LaCrO3 perovskite compoundsen_US
dc.typearticleen_US
dc.relation.journalJournal of Alloys and Compoundsen_US
dc.contributor.departmentAnadolu Üniversitesi, Fen Fakültesi, Fizik Bölümüen_US
dc.identifier.volume740en_US
dc.identifier.startpage1012en_US
dc.identifier.endpage1023en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.contributor.institutionauthorÇağlar, Müjdat


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