Room temperature synthesis of Cu incorporated ZnO nanoparticles with room temperature ferromagnetic activity: Structural, optical and magnetic characterization

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dc.contributor.authorYildirim, Ozlem Altintas
dc.contributor.authorDurucan, Caner
dc.date.accessioned2020-03-26T19:26:10Z
dc.date.available2020-03-26T19:26:10Z
dc.date.issued2016
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractCopper-incorporated zinc oxide (ZnO:Cu) nanoparticles with different amounts of Cu incorporation (Cu:Zn ratio at% of 1.25, 2.5 and 5) were synthesized for the first time by a room temperature precipitation technique without any subsequent post thermal treatment. Pure ZnO nanoparticles were also synthesized for direct structural and property-related comparison purposes. ZnO:Cu nanoparticles were thoroughly characterized by x-ray diffraction (XRD), x-ray photoelectron spectroscopy (XPS), transmission electron microscopy, vibrating sample magnetometer, UV-visible and photoluminescence spectroscopy. Detailed crystallographic investigation was accomplished through Rietveld refinement. ZnO:Cu nanoparticles exhibited room temperature ferromagnetic (RTFM) property. The origin of RTFM in ZnO:Cu nanoparticles has been investigated and this property was attributed to the substitutional incorporation of Cu ions into the ZnO lattice. The evidence for substitutional incorporation has been demonstrated with the positional changes in XRD peaks of ZnO and accompanying precise lattice parameter analyses by Rietveld refinement. Chemical analysis by XPS revealed incorporation of copper as Cu2+ ions. The Rietveld-based percent occupancy values for Zn sites imply certain limited substitution of the Cu2+ ions into the ZnO lattice with the increasing amount of Cu. Meanwhile, the magnetization enhanced with increasing Cu amount, due to the narrowing band gap, suggesting that RTFM characteristics are an intrinsic property of ZnO:Cu nanoparticles. This work gives insight into the origin of RTFM in ZnO nanoparticles and can be used to enhance ferromagnetism in diluted magnetic semiconductors. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.en_US
dc.description.sponsorshipMETU-BAPMiddle East Technical University [BAP-03-08-2012-007]; national scholarship program; METU-OYP ProgramMiddle East Technical Universityen_US
dc.description.sponsorshipThis work was funded by METU-BAP through grant BAP-03-08-2012-007. OAY thanks The Scientific and Technological Research Council of Turkey (TUBITAK) for the support by the national scholarship program for PhD student and also METU-OYP Program. The assistance of Mehmet Yildirim in Rietveld refinement analyses and magnetic measurements is kindly appreciated. In addition, the authors also thank to METU Central Laboratory for analytical characterization support.en_US
dc.identifier.doi10.1016/j.ceramint.2015.10.113en_US
dc.identifier.endpage3238en_US
dc.identifier.issn0272-8842en_US
dc.identifier.issn1873-3956en_US
dc.identifier.issue2en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage3229en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.ceramint.2015.10.113
dc.identifier.urihttps://hdl.handle.net/20.500.12395/33964
dc.identifier.volume42en_US
dc.identifier.wosWOS:000367277100036en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherELSEVIER SCI LTDen_US
dc.relation.ispartofCERAMICS INTERNATIONALen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectCu doped ZnOen_US
dc.subjectNanoparticlesen_US
dc.subjectRTFMen_US
dc.subjectPrecipitationen_US
dc.subjectRoom temperature synthesisen_US
dc.titleRoom temperature synthesis of Cu incorporated ZnO nanoparticles with room temperature ferromagnetic activity: Structural, optical and magnetic characterizationen_US
dc.typeArticleen_US

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