Identification of giant dielectric permittivity in the BiVO4

Communication—Detection of Giant Dielectric Constant in Strontium Orthovanadate Sr3V2O8

“…Moreover the ε r values indicate that a giant (and/or colossal) dielectric constant of the order ∼10 3 -10 6 arise in the low-frequency range between 1 Hz-1 kHz. It exhibits the giant dielectric constant phenomena 15,24 (ε above 10 3 ), for dielectric loss (Fig. 3c) presented by SVO in room temperature the tan δ values are around 10 −1 and…”

“…The rise in the conductivity value with temperature suggests that the electrical conduction in SVO is a thermally activated process. 15,16 The energy necessary to activate this process was calculated by using the conductivity and the relaxation frequency of Z spectrum in the Arrhenius relation, by which the values of the natural logarithm were plotted versus the absolute temperature inverse. [17][18][19] The plots of these linear Arrhenius relations are shown in Fig.…”