μs P-E curve and reverse phase transition of antiferroelectric ceramics during ultra-fast charge-discharge

Antiferroelectric materials hold great potential for energy storage applications. However, a significant challenge lies in the disparity Delta W between the rapid discharge energy density Wdis and the recoverable energy density W-re. Quantitative analysis is still lacking, and the ultra-fast reverse ferroelectric-antiferroelectric (FE-AFE) transition behavior at the microsecond scale remains unknown. In this study, a pulse technique was employed instead of the Sawyer-Tower method to obtain the mu s P-E loop during rapid charge-discharge processes. The mu s P-E curve clearly illustrates the distinct FE-AFE transition behavior during rapid discharge in comparison to low-frequency conditions. Under pulsed conditions, the FE-AFE transition field was observed to decrease, and even a remanent polarization was observed, leading to a reduction in discharge energy during fast discharge. Moreover, through the enhancement of relaxor behavior and the increased diffuseness of FE-AFE switching, the mu s P-E loop tended to resemble that observed at low frequencies, thereby resulting in more efficient discharge performance. This study introduced a technique for investigating the ultra-fast FE-AFE transition. Furthermore, it unveiled the origin of Delta W and provided an effective method for achieving high discharge energy density.

Automated summary

This study investigated the behavior of antiferroelectric materials during rapid discharge using pulse technique, and unveiled the origin of Delta W. The results showed that more efficient discharge performance can be achieved by enhancing relaxor behavior and increasing the diffuseness of FE-AFE switching.