Ionic conduction in glass: New information on the interrelation between the "Jonscher behavior" and the "nearly constant-loss behavior" from broadband conductivity spectra - art. no. 085901

We analyze broadband ac conductivity spectra of various ion conducting glas ses with regard to the composition dependence of the "Jonscher behavior" an d of the "nearly constant-loss behavior." In the temperature range of our e xperiments (173 K less than or equal to T less than or equal to 573 K), bot h types of behavior are closely related, indicating that both arise from io n hopping. However, the "nearly constant-loss behavior" observed at tempera tures below 100 K seems to be caused by other dynamic processes.