XRD of the annealed ceramic.
(a) Real part of permittivity, (b) imaginary part of permittivity, (c) loss factor as a function of temperature at different frequencies in the range 100 Hz-1 MHz.
(a) ε′-logf, (b) ε′′-logf, (c) permittivity Cole-Cole plot, (d) electric modulus Cole-Cole plot, in the range T < TS; (e) ε′-logf, (f) ε′′-logf, (g) permittivity Cole-Cole plot, (h) electric modulus Cole-Cole plot, in the range TS < T < Tm; (i) ε′-logf, (j) ε′′-logf, (k) permittivity Cole-Cole plot, (l) electric modulus M′-M′′ plot, in the range T > Tm.
Arrhenius plot of the relaxation frequency.
Temperature-dependent Raman spectra of BNT-BT-5CT.
Spectral analysis of BNT-BT-5CT in dependence of temperature. (a) Peak position; (b) intensity; and (c) FWHM. Each point is the average of three experimentally collected data points. The standard deviation is represented on the graphs as error bars.
Temperature dependence of the two modes at 270 cm−1 and 380 cm−1.
Current-Polarization-Electric field loop at different frequencies in the range 25 °C–75 °C.
Current-polarization-electric field loop at different frequencies in the range 100 °C–175 °C.
Frequency dependence of Pmax and Pr in the range 25 °C–175 °C.
Temperature dependence of the parameter α.
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