Abstract:
The dielectric relaxation processes in Ge$_{28.5}$Ðb$_{15}$S$_{56.5}$ glassy system are investigated. The introduction of an iron impurity into a glass matrix is shown to sharply increase the permittivity $\varepsilon$' and decrease the dissipation factor tan$\delta$. The found regularities are explained within the cluster structure (two-phase) model of doped glass.