SEM images of calcined particles (a) and sintered grains (b) of ceramics.
Complex impedance diagrams of: (a) single crystal at , and , and (b) ceramic at . The numbers indicate the log of the signal frequency.
Electric conductivity as a function of the reciprocal temperature. (a) single crystal, (b) ceramics. The experimental data fits the Arrhenius function.
Real and imaginary parts of complex permittivity of single crystal: (a) as a function of the temperature; (b) bode plots of and at several temperatures.
Log-log plot of the real and imaginary parts of permittivity as a function of frequency at several temperatures. (a) Single crystals, (b) ceramics.
Article metrics loading...
Full text loading...