Effects of sintering condition on giant dielectric and nonlinear current-voltage properties of Na1/2Y1/2Cu3Ti3.975Ta0.025O12 ceramics

Phase Evolution, Dielectric, and Electric Behavior of Sm‐Doped BCTO Ceramic Fabricated by Semi‐Wet Method

“…The temperature dependence of ac conductivity was more pronounced at lower frequencies compared to higher frequencies, primarily attributed to the presence of a thermally activated process originating from distinct localized states within the bandgap. [ 49 ] the temperature‐dependence of the electrical conductivity satisfies the Arrhenius Equation, as shown in Equation: [ 53 ] $$$$\begin{equation}{\sigma }_ = {\sigma }_{o\ }exp\left( {\frac{{ - {E}_a}}{{{k}_BT}}} \right)\ \end{equation}$$$$where $${{{\sigma}}}_{\mathrm{o}}$$, E a , $${{\mathrm{k}}}_{\mathrm{B}}$$, and T denote the pre‐exponential term, the activation energy of the material, the Boltzmann constant and absolute temperature, respectively. Furthermore, the graph illustrates a decrease in sample conductivity as the concentration of Sm3+ increases.…”