fig9

Figure 9. Impedance diagram of NN-SMZ ceramics. (A) x = 0.05, (B) x = 0.08, (C) x = 0.12, and (D) x = 0.15. (E) Impedance diagram of NN-SMZ components at 560 °C, (F) Band gap energy for NN-SMZ ceramics, (G) The fitted activation energy of NN-SMZ.