Effect of secondary phases on the structure, morphology and dielectric properties of BiFeO3 synthesized through solution combustion technique
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In the present work, pure phase Bismuth Ferrite (BiFeO3) was synthesized through the solution combustion technique usingacetylacetone as chelating agent and urea as fuel. The samples calcined at various temperatures were studied to understandthe formation of secondary phases along with pure BiFeO3 and the effect of these secondary phases on the structure,morphology and dielectric properties of BiFeO3. Further, the crystallographic parameters were calculated using Rietveldrefinement. XRD and SEM analysis reveals that at higher calcinations temperatures the secondary phases disappear (12.53%to 0.07%) and the grains become uniformly distributed over the large area. While FTIR spectra reveals that highly crystallineBiFeO3 obtained at higher temperature. Dielectric properties were found to improve in pure bismuth ferrite as compared tothe samples with secondary phases.
Abstract
In the present work, pure phase Bismuth Ferrite (BiFeO3) was synthesized through the solution combustion technique usingacetylacetone as chelating agent and urea as fuel. The samples calcined at various temperatures were studied to understandthe formation of secondary phases along with pure BiFeO3 and the effect of these secondary phases on the structure,morphology and dielectric properties of BiFeO3. Further, the crystallographic parameters were calculated using Rietveldrefinement. XRD and SEM analysis reveals that at higher calcinations temperatures the secondary phases disappear (12.53%to 0.07%) and the grains become uniformly distributed over the large area. While FTIR spectra reveals that highly crystallineBiFeO3 obtained at higher temperature. Dielectric properties were found to improve in pure bismuth ferrite as compared tothe samples with secondary phases.
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