High strain and energy-storage density across a wide temperature range in fine PbHfO3 ceramics

Enhanced energy storage capabilities in PbHfO3-based antiferroelectric ceramics through delayed phase switching and induced multiphase transitions

“…14,15 However, lead-free AFE materials of AgNbO 3 -based and NaNbO 3 -based have faced challenges in further application development due to their only metastable AFE phases or difficulty in synthesis. 16–19 Recently, stable AFE PbHfO 3 (PHO) polycrystalline ceramics, 20,21 analogous to PZO, have emerged for energy storage applications. The energy storage performance of PHO-based ceramics may even surpass that of PZO-based ones, potentially due to the smaller size of hafnium (Hf) ions and the increased stability of the AFE phase in PHO under external fields.…”