In electromagnetism, electrostriction is a property of all electrical non-conductor or dielectrics. Electrostriction causes these materials to change their shape under the application of an electric field. It is the dual property to magnetostriction.
Explanation
Electrostriction is a property of all dielectric materials,
:<math>\varepsilon_{ij} = Q_{ijkl}P_k P_l.</math>
The electrostrictive tensor satisfies Electrostriction exists in all materials, but is generally negligible.