Effect of gamma irradiation on conductivity of Cd$_{1-x}$Fe$_{x}$Te

The effect of $\gamma$-irradiation at the dose $D_{\gamma}$ = 605.6 kGy on the temperature dependences of conductivity and dielectric permittivity of Cd$_{1-x}$Fe$_{x}$Te semimagnetic semiconductors were investigated. The character of the $\varepsilon'(T)$ dependences of the irradiated Cd$_{1-x}$Fe$_{x}$Te changes: there is a drop in the curves in the temperature range of 300/400 K at measurement frequencies 25 Hz–1 MHz, and $\varepsilon$' increases by 20 times. In the $\sigma(T)$ dependence, at all measurement frequencies a maximum appears at a temperature of 400 K and conductivity increases by 40 times. We assume that the character of the temperature dependences of dielectric permittivity and conductivity corresponds to the ionic conductivity.