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- W4248762404 abstract "Bi-layered ferroelectric thin films of (Sr 0.8 Ba 0.2 )Bi 2 Ta 2 O 9 were grown on Pt/TiO 2 /SiO 2 /Si substrates using the pulsed laser deposition technique. The effect of oxygen pressure and annealing temperature on the structural and electrical properties were studied. The XRD results revealed that the films grown at lower oxygen pressure (100-200 mTorr) and annealed at higher temperature (>800 °C) have the evidence of secondary phase. Whereas, films grown at higher pressure (300 mTorr) and annealed at higher temperature ∼850 °C does not show any secondary phases. Increase in the intensity of optical phonon modes with annealing temperature is attributed to larger grain size at higher annealing temperatures. The films annealed at 800 °C show enhanced ferroelectric properties with remanent polarization (2P r ) of 23.5 w C/cm 2 and coercive field of ∼31 kV/cm. The Films annealed at higher temperature (800°C) have relatively higher dielectric constant with lower dissipation factor (∼0.02). Increased tangential loss with the annealing temperature (> 800 °C) is attributed to the interdiffusion of Bi in to Pt electrode." @default.
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- W4248762404 date "2002-01-01" @default.
- W4248762404 modified "2023-10-01" @default.
- W4248762404 title "Pulsed Laser Deposition of (Sr 0.8 Ba 0.2 )Bi 2 Ta 2 O 9 Ferroelectric Thin Films" @default.
- W4248762404 doi "https://doi.org/10.1080/713716190" @default.
- W4248762404 hasPublicationYear "2002" @default.
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