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An optimized process for fabrication of SrBi2Ta2O9 thin films using a novel chemical solution deposition technique

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Abstract

Ferroelectric SrBi2Ta2O9 (SBT) thin films on Pt/ZrO2/SiO2/Si were successfully prepared by using an alkanolamine-modified chemical solution deposition method. It was observed that alkanolamine provided stability to the SBT solution by retarding the hydrolysis and condensation rates. The crystallinity and the microstructure of the SBT thin films improved with increasing annealing temperature and were strongly correlated with the ferroelectric properties of the SBT thin films. The films annealed at 800 °C exhibited low leakage current density, low voltage saturation, high remanent polarization, and good fatigue characteristics at least up to 1010 switching cycles, indicating favorable behavior for memory applications.

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Kim, SH., Kim, D.J., Lee, K.M. et al. An optimized process for fabrication of SrBi2Ta2O9 thin films using a novel chemical solution deposition technique. Journal of Materials Research 14, 4395–4401 (1999). https://doi.org/10.1557/JMR.1999.0594

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  • DOI: https://doi.org/10.1557/JMR.1999.0594

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