The structural and mechanical properties of Gd and Nd substituted double layered LaCaMnO7 ceramics

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dc.authorid0000-0001-6305-5349en_US
dc.contributor.authorTerzioğlu, Rıfkı
dc.date.accessioned2021-06-23T19:51:08Z
dc.date.available2021-06-23T19:51:08Z
dc.date.issued2019
dc.departmentBAİBÜ, Mühendislik Fakültesi, Elektrik Elektronik Mühendisliği Bölümüen_US
dc.description.abstractWe report the results of a detailed study for the structural, microstructural and mechanical properties of Gd and Nd substituted LaCaMnO7 samples by using XRD, SEM, EDX and dynamic Vickers micro-hardness measurements. The lattice parameters, impurity phases and crystallite sizes are determined from the XRD analysis while the surface morphology and microstructure examinations are carried out from the SEM analysis. While XRD results indicate that neither Gd-nor Nd-substitution changes the lattice parameters significantly, SEM micrographs display quite different average grain sizes of 1.40 and 0.84 mm for Gd-and Nd-substituted samples, respectively. From the Vickers micro-hardness measurements, the values of the contact depth and the area of the indent imprint, the creep, the stiffness, the apparent micro-hardness, the reduced elastic modules and the elastic recovery ratios are computed for both samples. It is observed that these mechanical properties depend on the load and the substitutional specie. The indentation induced cracking model is used to analyze the measured hardness and the true micro-hardness values of 2.58 GPa and 2.91 GPa are found for the Gd-and Nd-substituted samples, respectively. The possible mechanism for the observed changes in microstructural and mechanical properties due to Gd and Nd substitution with La are, also, discussed. (C) 2019 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.jallcom.2019.05.191
dc.identifier.endpage1180en_US
dc.identifier.issn0925-8388
dc.identifier.issn1873-4669
dc.identifier.scopus2-s2.0-85066040550en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1173en_US
dc.identifier.urihttps://doi.org/10.1016/j.jallcom.2019.05.191
dc.identifier.urihttps://hdl.handle.net/20.500.12491/9931
dc.identifier.volume797en_US
dc.identifier.wosWOS:000471128700137en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorTerzioğlu, Rıfkı
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.subjectManganitesen_US
dc.subjectGd and Nd Substitutionen_US
dc.subjectVickers Hardnessen_US
dc.subjectRISE Behavior and IIC Modelen_US
dc.titleThe structural and mechanical properties of Gd and Nd substituted double layered LaCaMnO7 ceramicsen_US
dc.typeArticleen_US

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