fig1

Figure 1. Local structure regulation and chemical design of energy-storage ceramics. (A) Structural evolution of BNT-BT perovskite after incorporating BS; (B) Schematic of the polar structure of BNT-0.4BT ferroelectric matrix and favorable BNT-BT-0.1BS RFEs; (C) Structural parameters of tolerance factor (t) and structural distortion (δ) for Pb-free perovskites; (D) Evolution of P-E loops. BNT: Bi_0.5Na_0.5TiO₃; BT: BaTiO₃; BS: BaSnO₃; RFEs: relaxor ferroelectrics.