Investigation of the tunnel effect and dielectric parameters of α-LiIO3 crystals

Temperature and frequency spectra of tanδ, e′, and e″ of laser lithium iodate single crystals are investigated at temperatures in the interval 77-450 K and frequencies in the range 5-10 8 Hz. An analysis of these spectra and the Cole-Cole diagrams demonstrates tunneling of charge carriers and existence of relaxation oscillators of several types. The temperature interval for the tunnel effect is determined.