Electrothermal effect
The inverse effect of thermoelectric effect, the dielectric with electrothermal effect (mostly electret) is called electrothermal body. When the permanent polarization of an electrothermal body is changed by means of an external electric field under adiabatic conditions, its temperature will change. This is called the electrothermal effect. Adiabatic depolarization can lower the temperature, and can be used to obtain ultra-low temperatures like the adiabatic demagnetization method (see magnetocaloric effect). Commonly used electric heating materials include strontium titanate ceramics and polyvinylidene fluoride (PVF) electrets.