Further MN rule in thermally activated a.c. conduction of Se-Te-Sb chalcogenide glasses

Temperature and frequency dependence of a.c. conductivity have been studied in glassy Se70Te30−xSbx (4 ≤ x ≤ 10) alloys. The observation of Further Meyer-Neldel rule in case of a.c. conductivity is reported. The observation of the correlation between Meyer-Neldel pre-factor σ00 and Meyer-Neldel energy is explained by multiple excitations stimulated by optical phonon energy as described by Yelon and Movaghar.