Dielectric properties of single-crystal deuterated triglycine sulfate (DTGS) in ultra-weak low- and infra-low-frequency electric fields

The complex permittivity epsilon(*) is studied with separate readings for e psilon(') and epsilon(') at low and infralow frequencies and ultraweak fiel ds. The effective conductivity gamma is determined. An Arrhenius dependence is observed for ln epsilon(')(1/T), ln epsilon(')(1/T), and ln gamma(1/T), both in the paraphase and in the polar phase. It is proposed that the cond uctivity of crystalline DTGS in the paraphase is an ion jump conductivity. (C) 1999 American Institute of Physics. [S1063-7834(99)03106-8].