Abstract

ABSTRACT Frequency dependence of dielectric constant and coercive field are investigated for PbZr0.4Ti0.6O3 (PZT) capacitors. The calculations base on the in-series capacitor model show that the dielectric constant followe an universal-law dependence with various bias, which could be interpreted by constant phase model. The coercive field shows power-law dependence on the frequency in different frequency range. The fitted parameter values m increased around 150 Hz. And the m did not agree with the result of Ishibashi and Orihara theory. This suggests that the space charges also play an important role in the domain reverse.

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