A-site Pb doping effect on structural, microstructural and magnetotransport properties of La0.5Sm0.2Ca0.3-xPbxMnO3 (x=0, 0.05, 0.10) manganite

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dc.authorid0000-0002-2752-9671en_US
dc.authorid0000-0002-3944-0367en_US
dc.authorid0000-0001-7066-1566en_US
dc.authorid0000-0002-3133-5693en_US
dc.contributor.authorDenbri, Fatih
dc.contributor.authorMahamdioua, Nabil
dc.contributor.authorMeriche, Faiza
dc.contributor.authorKoç, Nevin Soylu
dc.contributor.authorTerzioğlu, Cabir
dc.contributor.authorVarilci, Ahmet
dc.contributor.authorAltıntaş, Sevgi Polat
dc.date.accessioned2023-06-08T07:03:17Z
dc.date.available2023-06-08T07:03:17Z
dc.date.issued2021en_US
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.descriptionThis work was supported by the Directorate General For Scientific Research and Technological Development - Algeria.en_US
dc.description.abstractStructural, microstructural and magneto-transport properties of polycrystalline La0.5Sm0.2Ca0.3-x PbxMnO3 (x = 0, 0.05 and 0.10) samples, prepared by conventional solid state reaction, were studied. Refinement of the Powder X-ray diffractograms revealed that all the samples crystallize into orthorhombic structure with Pnma space group and the lattice parameters increase with increasing Pb content. The scanning electron microscope (SEM) micrographs show a granular character and the estimated grain sizes ranges between 10 mu m and 20 mu m. The experimental electrical resistivity and the magnetoresistance in the temperature range 20 K-250 K under magnetic field of zero and 1 Ta, have been recorded using four probe technique. The resistivity curves without magnetic field, exhibit a ferromagnetic-metallic (FM) to paramagnetic-insulating (PI) transition at TMI = 125 K, 91 K and 37 K for x = 0, 0.05 and 0.10, respectively. The magnetoresistance reaches 58% for undoped sample and decrease with Pb doping under 1T. The resistivity values increases drastically with Pb doping. These two results were explained mainly by the increase of the disorder sigma 2 and rA TMI) and for x = 0 and 0.05 samples, the resistivity curves is well fitted by a combination of the residual resistivity, weak localization and electron-electron scatterings; in addition to small polaron contribution or electron-phonon interaction respectively. In the high temperature regime T TMI, all our resistivity curves has been analyzed using adiabatic small polaron hopping model (ASPH) above theta D/2 and variable range hopping model (3D-VRH) (TMI < T < theta D/2). An attempt to use the percolation model to describe the resistivity data in the entire temperature range for both x = 0 and 0.05 samples, was established. Finally, density of state, mean hopping distance Rh and mean hopping energy Eh were calculated and discussed.en_US
dc.description.sponsorshipDirectorate General For Scientific Research and Technological Development - Algeriaen_US
dc.identifier.citationDenbri, F., Mahamdioua, N., Meriche, F., Koc, N. S., Terzioglu, C., Varilci, A., & Altintas, S. P. (2021). A-site Pb doping effect on structural, microstructural and magnetotransport properties of La0. 5Sm0. 2Ca0. 3-xPbxMnO3 (x= 0, 0.05, 0.10) manganite. Materials Chemistry and Physics, 267, 124550.en_US
dc.identifier.doi10.1016/j.matchemphys.2021.124550
dc.identifier.endpage11en_US
dc.identifier.issn0254-0584
dc.identifier.issn1879-3312
dc.identifier.scopus2-s2.0-85105691137en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.matchemphys.2021.124550
dc.identifier.urihttps://hdl.handle.net/20.500.12491/11075
dc.identifier.volume267en_US
dc.identifier.wosWOS:000662833500001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorKoç, Nevin Soylu
dc.institutionauthorTerzioğlu, Cabir
dc.institutionauthorVarilci, Ahmet
dc.institutionauthorAltıntaş, Sevgi Polat
dc.language.isoenen_US
dc.publisherElsevier Science SAen_US
dc.relation.ispartofMaterials Chemistry and Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectManganitesen_US
dc.subjectElectrical Resistivityen_US
dc.subjectMetal-Insulator Transitionen_US
dc.subjectMagnetoresistanceen_US
dc.subjectModelsen_US
dc.titleA-site Pb doping effect on structural, microstructural and magnetotransport properties of La0.5Sm0.2Ca0.3-xPbxMnO3 (x=0, 0.05, 0.10) manganiteen_US
dc.typeArticleen_US

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