Piezoelectric Response and Free Energy Instability in the Perovskite Crystals BaTiO3, PbTiO3 and Pb(Zr,Ti)O3

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dc.creatorBudimir, Marko
dc.creatorDamjanovic, Dragan
dc.creatorSetter, Nava
dc.date2006-04-18
dc.date.accessioned2026-07-07T07:05:35Z
dc.date.available2026-07-07T07:05:35Z
dc.descriptionThe question of the origin of the piezoelectric properties enhancement in perovskite ferroelectrics is approached by analyzing the Gibbs free energy of tetragonal BaTiO3, PbTiO3 and Pb(Zr,Ti)O3 in the framework of the Landau-Ginzburg-Devonshire theory. The flattening of the Gibbs free energy profile appears as a fundamental thermodynamic process behind the piezoelectric enhancement. The generality of the approach is demonstrated by examining the free energy flattening and piezoelectric enhancement as a function of composition, temperature, electric field and mechanical stress. It is shown that the anisotropy of the free energy flattening is the origin of the anisotropic enhancement of the piezoelectric response, which can occur either by polarization rotation or by polarization contraction. Giant enhancement of the longitudinal piezoelectric response (on the order of 1000 pC/N) is predicted in PbTiO3 under uniaxial compression.
dc.description19 pages, 4 Figures, accepted in Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0604410
dc.identifierhttp://arxiv.org/abs/cond-mat/0604410
dc.identifierPhys. Rev. B 73, 174106 (2006)
dc.identifierdoi:10.1103/PhysRevB.73.174106
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109714
dc.subjectMaterials Science
dc.titlePiezoelectric Response and Free Energy Instability in the Perovskite Crystals BaTiO3, PbTiO3 and Pb(Zr,Ti)O3
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