Structural and magnetotransport properties of the Y doped A-site deficient double layered manganites La1.2-x square 0.2YxCa1.6Mn2O7

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dc.authorid0000-0002-7280-6754en_US
dc.authorid0000-0003-4795-9182en_US
dc.authorid0000-0002-3133-5693
dc.authorid0000-0001-7066-1566
dc.authorid0000-0002-3944-0367
dc.contributor.authorMahamdioua, Nabil
dc.contributor.authorAmira, Abderrezak
dc.contributor.authorAltıntaş, Sevgi Polat
dc.contributor.authorVarilci, Ahmet
dc.contributor.authorTerzioğlu, Cabir
dc.date.accessioned2021-06-23T19:43:18Z
dc.date.available2021-06-23T19:43:18Z
dc.date.issued2016
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümüen_US
dc.description.abstractWe present structural, magnetic and electrical properties of the polycrystalline A-site-deficient yttrium doped double layered manganites La(1.2-)x square 0.2YxCa1.6Mn2O7 (x=0.2, 0.3 and 0.4) prepared by a solid state reaction method. The samples crystallize in the tetragonal structure with the space group I4/mmm. Doping with Y decreases the cell parameters and causes a decrease of the metal-insulator transition temperature. The same evolution with doping is also seen for the deduced Curie temperature from susceptibility curves which present a clear paramagnetic-ferromagnetic transition. The significant positive intrinsic magnetoresistance, shown in all samples, reaches 85% at 122 K under 7 T for 0.3 doped sample and can be attributed to the suppression of spin fluctuations via aligning the spins under external magnetic field, while the extrinsic one is attributed to the inter-grain spin-polarized tunneling across the grain boundaries. The simulation of the resistivity curves in the entire temperature range show that the percolation model is suitable to fit our results. The applied magnetic field increases the density of states near the Fermi level, which is in accordance with the observed decrease of resistivity. (C) 2016 Elsevier Inc. All rights reserved.en_US
dc.identifier.doi10.1016/j.jssc.2016.05.011
dc.identifier.endpage8en_US
dc.identifier.issn0022-4596
dc.identifier.issn1095-726X
dc.identifier.startpage1en_US
dc.identifier.urihttps://doi.org/10.1016/j.jssc.2016.05.011
dc.identifier.urihttps://hdl.handle.net/20.500.12491/8745
dc.identifier.volume240en_US
dc.identifier.wosWOS:000378662800001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.institutionauthorAltıntaş, Sevgi Polat
dc.institutionauthorVarilci, Ahmet
dc.institutionauthorTerzioğlu, Cabir
dc.language.isoenen_US
dc.publisherAcademic Press Inc Elsevier Scienceen_US
dc.relation.ispartofJournal Of Solid State Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDouble Layered Manganiteen_US
dc.subjectMagnetic Susceptibilityen_US
dc.subjectMagnetoresistanceen_US
dc.subjectVariable Range Hoppingen_US
dc.subjectPercolation Modelen_US
dc.titleStructural and magnetotransport properties of the Y doped A-site deficient double layered manganites La1.2-x square 0.2YxCa1.6Mn2O7en_US
dc.typeArticleen_US

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