Author/Authors :
Sarunas Bagdzevicius، نويسنده , , Sarunas and Grigalaitis، نويسنده , , Robertas and Banys، نويسنده , , Juras and Sternberg، نويسنده , , Andris and Bormanis، نويسنده , , Karlis، نويسنده ,
Abstract :
Electric properties of sodium potassium niobate ceramic doped antimony (Na0.5K0.5)(Nb0.93Sb0.07)O3 with sintering aid MnO2 (0.5 mol% MnO2) (KNNSbx + 0.5Mn) were investigated in a broad frequency (from 1 Hz to 54 GHz) and temperature (from 110 K to 800 K) ranges. The mean relaxation times calculated from the dielectric permittivity measurements fulfill Arrhenius relationship with dipole activation energy EA = 3409 K (EA/kB = 0.29 eV). The DC conductivity has been extracted from experimental results and the activation energy was calculated EA = 11733.78 K (EA/kB = 1.011 eV).
