Virginia TechPriya, ShashankKim, Hyeoung WooRyu, JunghoUchino, KenjiViehland, Dwight D.2014-02-032014-02-032002-03-01Priya, 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/10.1063/1.14556990003-6951http://hdl.handle.net/10919/25257The 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.application/pdfen-USIn CopyrightPolarization reversalSingle crystalsThin filmsRelaxersFerroelectricsSuppressionElectrodesCapacitorsMechanismsPhysicsArticle - Refereedhttp://scitation.aip.org/content/aip/journal/apl/80/9/10.1063/1.1455699https://doi.org/10.1063/1.1455699