fig12

Figure 12. Influence of grain size on polarization behavior and ESP in polycrystalline FEs. (A) Domain structures of polycrystalline models at remnant polarization state with varying grain sizes; (B) P-E loops, (C) ESP, and (D) P_r as a function of average grain size. This figure is quoted with permission from Wang et al.^[105]. ESP: Energy storage performance; FE: ferroelectric.