Dielectric properties of KNbGeO5 glass

We report the frequency and temperature dependence of dielectric properties for KNbGeO5 glass. The sample was prepared by the plate quenching method and the measurements were carried out in the frequency range from 102 Hz to 1.5 X 107 Hz with the heating rate of 2 .deg. C/min. The frequency dependence of the electrical data has been analyzed in the framework of the impedance Cole-Cole plot and the universal power law. It has been found that the activation energy obtained from the distribution of relaxation time of the Cole-Cole formalism is similar to the value 0.84 eV of the power law, indicating that the activation energy is an appropriate parameter to describe the relaxation mechanism.