Abstract
Lead iron niobate thin films were synthesized using a modified sol gel method. Films processed at temperatures as low as 400 °C had a dielectric constant K≊400. K of ≊1000 and a low loss factor tan δ≊0.02 were obtained for films rapid thermally processed between 650–700 °C. Films processed at ≊400 °C showed a more linear behavior and were able to endure higher electric fields up to 1.6 MV/cm. The remanent polarization Pr and coercive field Hc for films processed at 650 °C/1 s were 4.5 μC/cm2 and 40 kV/cm, respectively. Leakage current densities of films increased with processing temperature and were of the order of 4 and 10 nA/cm2 for films multiply processed at 425 °C/30 s and 650 °C/1 s, respectively.
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