BaTi0.91(Hf0.5Zr0.5)0.09 O3 thin films on Pt/SiO2/Si(100) substrates were fabricated by pulsed laser deposition using fourth harmonic generated light (λ=266 nm) from an Nd3+:YAG laser beam. The crystallinity and stoichiometry of BaTi0.91(Hf0.5Zr0.5)0.09O 3 films were determined by x-ray diffraction, x-ray fluorescence analysis and electron probe microanalysis. The ferroelectric properties of the thin films were investigated by electrical measurements. The leakage current density increased from 10 -11 to 10-3 A/cm2 with increasing electric field up to 200 kV/cm. The dielectric constant, remanent polarization and coercive field of BaTi0.91(Hf0.5Zr0.5)0.09O 3 thin films were estimated to be 120 at 1 kHz, 8.7 μC/cm 2 and 127 kV/cm, respectively
Published in:
Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on
(Volume:2
)
Date of Conference: 2000