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dc.contributor.authorDeepthi, N R-
dc.contributor.authorRavindran Nair, K-
dc.contributor.authorPrabhakar Rao, P-
dc.contributor.authorSibi, K S-
dc.contributor.authorPeter Koshy-
dc.contributor.authorVaidyan, V K-
dc.identifier.citationMaterials Chemistry and Physics 109(2-3):189-193;15 Jun 2008en_US
dc.description.abstractNew oxides of the type, NaAZrMO(6) (M = Ca or Sr; M = Nb or Ta), have been prepared by the solid-state reaction technique. Phase identification by powder X-ray diffraction (XRD) shows that NaCaZrMO6 has orthorhombic perovskite type structure (Pnma) and NaSrZrMO6 has cubic perovskite type structure (Pm3m). The grain morphology observation by scanning electron microscope (SEM) shows well-sintered grains. ac impedance spectra and electrical conductivity measurements in air, oxygen and nitrogen atmospheres indicate that they are probable oxide ion conductors with ionic conductivities of the order of 10(-3) S cm(-1) at 750 degrees C.en_US
dc.subjectPowder diffractionen_US
dc.subjectElectron microscopyen_US
dc.subjectElectrical propertiesen_US
dc.titleIonic conductivity in new perovskite type oxides: NaAZrMO(6) (A = Ca or Sr; M = Nb or Ta)en_US
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