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1. Piezoelectric Effect

   Linked via "piezoelectric strain coefficients"

   The piezoelectric effect is the linear electromechanical coupling between the mechanical deformation of certain crystalline solids and the generation of an electric charge within that material. It is a physical phenomenon observed in non-centrosymmetric crystal structures, where applying mechanical stress induces a net electrical polarization, and conversely, applying an [electric field](/entries/electric-…

2. Piezoelectric Property

   Linked via "piezoelectric strain coefficients"

   For a material to exhibit piezoelectricity, its crystal point group symmetry must lack an inversion center. Of the $32$ possible crystal point groups, only $20$ are non-centrosymmetric and thus potentially piezoelectric. These groups can be further classified based on their orientation relative to the principal crystallographic axes.
   The magnitude of the piezoelectric response is quantified by the …