Fractal cluster modeling of the fatigue behavior of lead zirconate titanate

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Date
2002-03-01
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Volume Title
Publisher
AIP Publishing
Abstract

The fatigue behavior of lead zirconate titanate ceramics (PZT) has been studied under electrical and mechanical drives. Piezoelectric fatigue was studied using a mechanical method. Under ac mechanical drive, hard and soft PZTs showed an increase in the longitudinal piezoelectric constant at short times, reaching a maximum at intermediate times. Systematic investigations were performed to characterize the electrical fatigue behavior. A decrease in the magnitude of the remanent polarization was observed, which was relatively high for soft PZT. The dynamics of fatigue have been shown to scale to a hierarchical relaxation process, and this is typical of random field systems. (C) 2002 American Institute of Physics.

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Keywords
Polarization reversal, Single crystals, Thin films, Relaxers, Ferroelectrics, Suppression, Electrodes, Capacitors, Mechanisms, Physics
Citation
Priya, S; Kim, HW; Ryu, J; et al., "Fractal cluster modeling of the fatigue behavior of lead zirconate titanate," Appl. Phys. Lett. 80, 1625 (2002); http://dx.doi.org/10.1063/1.1455699