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Electrical homogeneity is vital in optimising energy storage performance in BiFeO 3 –BaTiO 3 – x Bi(Li 0.5 Nb 0.5 )O 3 ceramic multilayer capacitors, giving rise to high recoverable energy density ∼13.8 J cm −3 under electric field ∼950 kV cm −1 and fatigue resistance behaviour.
Wang et al. (Wed,) studied this question.