The controllability of the non-ohmic and dielectric properties of the zno- based ceramic by doping with Ag

The ZnO-based ceramic samples containing Ag were prepared using the conventional solid-state reaction method. The experimental results showed that the non-ohmic and dielectric properties of the ZnO-based ceramic could be regularly changed by doping with Ag when the Ag percentages were more than 5.2% in volume. With the increase of the Ag fractions in the ceramic matrixes, the nonlinear voltage of the samples obviously decrease with a light decay of the nonlinear coefficient while the dielectric constants greatly increase with almost the same dissipation factors at 20Hz~1MHz. This demonstrates a fact that the electrical and dielectric behaviors of the ZnO-based ceramics can be improved by optimizing the content of Ag in the ceramic matrix.