The mechanism of dielectric relaxation and proton conductivity in an α-LiIO3 nanostructure

Thermostimulated depolarization currents are studied and analyzed. As a result, a mechanism of dielectric relaxation is developed for α-LiIO 3 crystals with the interatomic distance about 0.55 nm. This mechanism is due to formation of the Н 3 О + and OН − defects resulting from the displacement of a proton along the valence bond in water molecules and its following migration through tunneling both inside the IO 3 − ions and between these ions in the neighboring layers. In addition, the НIO 3 and НI 3 О 8 impurities can serve as proton donors. The negative maximum of thermostimulated depolarization currents caused by false hysteresis loops due to a conductivity lag is explained.