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Landau–Devonshire theory is used to investigate the effect of external mechanical stress (or strain) on domain structure and the remanent polarization of Pb(Zr 0.35 Ti 0.65 )O 3 (PZT) thin films, by considering the competition between the external stress and the intrinsic stresses. A set of intrinsic stress functions in PZT film is obtained by solving elastic mechanical equations...
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