The intermediate temperature T* revealed in relaxor polymers
Résumé
The temperature dependence of the dielectric and optical properties, crystal structure, and infrared
spectra of the relaxor poly(vinylidenefluoride-trifluoroethylene-chlorofluoroethylene) terpolymer
films obtained from Langmuir-Blodgett method have been comprehensively investigated. All the
results suggest that there exists a peculiar point at 370 K, which is attributed to the intermediate
temperature T* recently discovered in inorganic relaxors. Here, T* results from the change in the
growth rate of the trans gauche T3GT3G0 chain conformations with temperature, which is similar to
the transformation from dynamic to static behavior of the so-called polar nano-regions in inorganic
relaxors.