Диэлектрическо-спектроскопическая сепарация характеристик механизмов проводимости в нанкристаллическх пленках AgI

The study of the frequency dependence components complex permittivity thin (100 nm) nanocrystal silver iodide (AgI) films revealed presence two different types relaxation processes, sharply differing in their times: tau1<<tau2. It is established that small time tau1 formation a stable configuration internal electric field when external high-frequency sinusoidal shielded by system free conduction electrons. On contrary, long tau2 characterizes process shielding low-frequency quasi-free ions. shown temperature numerical value tau1(T) has thermal hysteresis with loop, position heating and cooling branches which coincides region forward reverse phase transitions AgI film: semiconductor-superionic superionic-semi-conductor. results calculating parameters dielectric spectra framework Debye theory are presented, demonstrating good agreement proposed electrical circuit film sample calculated impedance method