Lead-free (Ba, Sr)TiO3 – BiFeO3 based multilayer ceramic capacitors with high energy density. Issue 4 (April 2020) - Wang, Ge
Abstract: High recoverable energy density (10 J cm −3 ) multilayers have been fabricated from lead-free 0.61BiFeO3 -0.33(Ba0.8 Sr0.2 )TiO3 -0.06La(Mg2/3 Nb1/3 )O3 ceramics. High breakdown strength > 730 kV cm -1 was achieved through the optimisation of multilayer processing to produce defect-free dielectric layers 7 μm thick. Excellent temperature, frequency, fatigue stability and fast charge-discharge speed were observed in the multilayer, critical for their potential use in power electronics.