“Greening” the synthesis of SrBi2Ta2O9 thin films

Abstract A new procedure based on an ethanolic solution of the appropriate cations to obtain SrBi 2 Ta 2 O 9 (SBT) thin films is described, reducing the necessity of toxic organicals. According to X-ray diffraction analysis the desired SBT crystalline phase is obtained after heat treatment at 720 °C, in air, for 20 min. The ferroelectric properties of the obtained thin film include a remnant polarization value of 5.0 μC/cm 2 and a coercive field of 50 kV/cm, which are rather good results for a stoichiometric SBT thin film.