Abstract
Lead-free complex perovskite ceramics NaMeO3 (Me = Nb, Ta) were synthesized using conventional solid state reaction technique and characterized by structural, FTIR and electrical (dielectric and ac conductivity) studies. The crystal symmetry, space group and unit cell dimensions were determined from the experimental results using FullProf software. XRD analysis of the compound indicated the formation of single-phase orthorhombic structure with the space group Pmmm (47). Dielectric studies showed the diffuse phase transition at 394C for NaNbO3 and 430C for NaTaO3. Ac conductivity in both the compounds follows Jonscher‟s power law.
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