Abstract
The time of maximum switching current tm of triglycine sulfate (TGS) crystals has been measured as a function of field E and crystal thickness d in the ranges 102<E3 V/cm and 0.02<dtm=t exp[α0d−⅔/E] with t≃(1.3±0.3)×10−4 sec and α0=(4±1)×102 V/cm. The symmetry of the switching transients about tm is a function of d and increases slightly with E. The symmetry factor m varies from m=0.7 to m=0.4 for 0.5<ddm<0.1, a model based on dominant nucleation and growth of antiparallel domains is consistent with experimental observations.