Please use this identifier to cite or link to this item: http://dspace.univ-bouira.dz:8080/jspui/handle/123456789/14608
Title: Structure,microstructureandionicconductivityofthesolidsolution LiTi2 xSnx(PO4)3
Authors: Benabbas, Abderrahim
Issue Date: 2011
Publisher: Université akli mohand oulhadj Bouira
Citation: Elsevier
Abstract: The NasiconcompoundswiththecompositionLiTi2 xSnx(PO4)3 (x¼0–1.8) weresynthesisedbythe solid statereaction.TheirstructuresweredeterminedfromX-raypowderdiffractionusingRietveld analysis.AllthecompositionspresentthespacegroupR-3c.TherefinementsshowthattheTiandSn cations arestatisticallydistributedoverthesamepositionwhiletheLionesareexclusivelylocatedon the M1site.Thelatticeconstants a and c exhibit linearvariationoverthewholecompositionrange.The bond lengthsareinaccordancewiththoseofotherNasiconstructures.TheSEMmicrographsofthe samplesshowrelativeporousmicrostructures.Theionicconductivityisabout10 4–10 5 S cm 1; for the activationenergy,atypicalvalueof0.32eVisobtainedfor x¼0.6 compositionwhereassignificant deviationfromlinearityinthetemperaturedependenceofthedcconductivity,isobservedfortheSn- rich ones.Thistendencyisdiscussedalongwiththestructuralfeatures
URI: http://dspace.univ-bouira.dz:8080/jspui/handle/123456789/14608
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