High energy-storage performance and dielectric properties of antiferroelectric (Pb0.97La0.02) (Zr0.5Sn0.5−xTix)O3 ceramic

• Different Sn/Ti ratio in AFE ceramics led to different dielectric behaviors.
• A high energy-storage density of 4.2 J/cm3 was achieved.
• Energy-storage performance showed the excellent stability.
• The Curie point of AFEs moved to lower temperature as applied electric field.

(Pb0.97La0.02) (Zr0.5Sn0.5−xTix)O3 (0.04 < x < 0.10) antiferroelectric (AFE) ceramics were fabricated by the roll forming, and the dielectric properties and high energy-storage performance were investigated in detail. The results showed that all samples had different dielectric behaviors at room temperature. The switching field (EAF) obviously increased with the increase of Sn, and led to the increase of energy storage. A maximum recoverable energy-storage density of 4.2 J/cm3 with an efficiency of 82% was achieved in the (Pb0.97La0.02) (Zr0.5Sn0.44Ti0.06)O3 ceramic at room temperature, and also showed the stable energy-storage behavior. It was also observed that the applied of dc bias field caused the Curie temperature of PLZST move to the lower temperature. The high energy storage density and efficiency indicated that (Pb0.97La0.02) (Zr0.5Sn0.44Ti0.06)O3 AFE ceramic was a promising material for high-power energy storage.

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