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http://dspace.univ-bouira.dz:8080/jspui/handle/123456789/14607| Title: | Structure,microstructureandionicconductivityofthesolidsolution LiTi2 xSnx(PO4)3 |
| Keywords: | Impedance spectroscopy, X-ray diffraction , Crystal structure ,Ionic conductivity , Microstructure |
| 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/123456789/14607 |
| Appears in Collections: | Articles |
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| ArticleNedjemeddine.pdf | Structure,microstructureandionicconductivityofthesolidsolution LiTi2 xSnx(PO4)3 | 538,46 kB | Adobe PDF | View/Open |
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