Influence of Ru-doping on structure, defect chemistry, magnetic interaction and carrier motion of the La1-xNaxMnO3+delta manganite

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dc.creatorMalavasi, Lorenzo
dc.creatorMozzati, Maria Cristina
dc.creatorTealdi, Cristina
dc.creatorAzzoni, Carlo Bruno
dc.creatorFlor, Giorgio
dc.date2005-05-12
dc.date.accessioned2026-07-07T03:05:11Z
dc.date.available2026-07-07T03:05:11Z
dc.descriptionIn this work we report a structural, electrical and magnetic characterization of the La1-xNaxMn1-yRuyO3+d (LNMRO) system with x = 0.05, 0.15 and y = 0, 0.05, 0.15, also comprising an investigation of the role of the oxygen content on the related redox properties. The experimental investigation has been realized with the aid of X-ray powder diffraction, electron microprobe analysis, thermogravimetry, electrical resistivity and magnetization measurements, and electron paramagnetic resonance. We demonstrate that the effect of ruthenium doping on the studied LNMRO compounds is not only directly related to the Ru/Mn substitution and to the Ru oxidation state but also indirectly connected to the oxygen content in the sample. Our data show that ruthenium addition can improve electrical and magnetic properties of non-optimally (low) cation doped manganites, causing an increase of the TC value and the insurgence of MR effect, as observed for the x = 0.05 and y = 0.05 sample.
dc.description28 Pages, 7 Figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0505309
dc.identifierhttp://arxiv.org/abs/cond-mat/0505309
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/26355
dc.subjectMaterials Science
dc.titleInfluence of Ru-doping on structure, defect chemistry, magnetic interaction and carrier motion of the La1-xNaxMnO3+delta manganite
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