Ferroelastic ferroelectrics , for example are piezoelectric , meaning that an electric field can cause a shape change .
A pressure can induce a voltage , and ferroelastic ferromagnets show the analogous piezomagnetic behavior .
Ferroelastic ferroelectrics , for example are piezoelectric , meaning that an electric field can cause a shape change or a pressure can induce a voltage , and ferroelastic ferromagnets show the analogous piezomagnetic behavior .