Low-Temperature Crystallization of Sol-Gel Processed Pb0.5Ba0.5TiO3: Powders and Oriented Thin Films |
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Authors: | Suresh C Pillai Stacey W Boland Sossina M Haile |
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Affiliation: | Department of Materials Science, California Institute of Technology, Pasadena, California 91125 |
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Abstract: | A novel sol-gel process suitable for depositing thin-film lead barium titanate has been developed. X-ray diffraction analysis showed perovskite phase crystallization to occur at a temperature as low as 400°C with single-phase Pb0.5Ba0.5TiO3 (PBT) resulting at a temperature as low as 500°C. Small concentrations of barium carbonate were evident by X-ray diffraction at 400°C, and indications of minor, carbonate-containing phases were evident by FTIR at 600°C. Deposition of the sol by spin coating on single-crystal and thin-film MgO on silicon resulted in 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 MgO. |
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Keywords: | low temperature crystals/crystallization sol-gel |
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