Abstract
Flexoelectric phenomenon describes creation of electric polarization in non-conducting solids by applying of gradient of deformation. The inverse flexoelectric phenomenon describes the generation of a mechanical deformation in an insulating solid by an applied gradient of the electric field. Lead magnesium niobate-lead titanate (PMNT) ceramic permits study of the flexoelectric behavior because of its large flexoelectric coefficient. Special conical samples were prepared for the generation of a high electric field gradient and cylindrical samples with uniform field. Theoretical study of flexoelectric phenomenon seems to be very interesting in the last time because it was confirmed from direct (polarization caused by gradient of deformation) and from inverse behavior (deformation developed from gradient electric field) outgoing from thermodynamic theory.
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