Figure 6. Electrical properties of NBBSCT-xMN ceramics. (A) Weibull distribution of Eb. (B) Composition dependence of Eb. (C) Complex impedance spectra at 625 °C. (D) Arrhenius lines of lnfmaxvs. 1,000/T. (E) Composition dependence of Ea. (F) Leakage current density.