ABSTRACT
The energy storage density of different particle sizes natural tourmaline samples under different temperatures and applied field were calculated by measuring P-E loops of the samples through TF3000 TF analyzer. The results show that the energy storage density is the mutual influence of temperature, applied electric field and particle sizes by means of influencing polarization strength increment. The main reason of the impact on energy storage is the variation of polarizability when other conditions change, leading to the alteration of polarization strength increment.