Fabrication and Electrical Characterization of Translucent Bi₁₂TiO₂₀ Ceramics

Figure 6

Complex impedance diagrams of low- and high-density BTO ceramics, measured at 500°C. The numbers indicate the log of the signal frequency. The equivalent circuit used for low-density ceramics has separate contributions of grain (g) and grain boundary (gb). For the high-density ceramic, only one RC block was used in the fitting. The solid curves correspond to the overall fitting curves.