Low-Temperature Crystallization of Sol–Gel Processed Pb0.5Ba0.5TiO3: Powders and Oriented Thin Films

A novel sol– gel process suitable for depositing thin-film leadbarium titanate has been developed. X-ray diffraction analysisshowed perovskite phase crystallization to occur at a temperatureas low as 400°C with single-phase Pb0.5Ba0.5TiO3 (PBT)resulting at a temperature as low as 500°C. Small concentrationsof barium carbonate were evident by X-ray diffraction at400°C, and indications of minor, carbonate-containing phaseswere evident by FTIR at 600°C. Deposition of the sol by spincoating on single-crystal and thin-film MgO on silicon resultedin highly oriented PBT films after calcination at 600°C. Mixed(100)/(001) films were obtained on single-crystal MgO,whereas entirely (100) films were obtained on thin-film Mg