The contributions from different mechanisms of motion of domain boundariesto the effective permittivity of triglycine sulfate crystals in moderate low- and infralow-frequency fields

A study of the special features of contribution of domain boundaries to the effective permittivity epsilon*(eff) of a TGS crystal is made in electric fields of various frequencies and in a wide temperature range of the polar phase, up to the phase transition temperature. In considering the experimen tal data obtained, we classify the defects into three types depending on th eir interaction strength with the domain boundaries. Using the approach dev eloped, we explain the frequency and temperature dependences of the contrib utions from the hysteretic and relaxation mechanisms of motion of the domai n boundaries to epsilon*(eff). (C) 2001 MAIK "Nauka/ Interperiodica".