Effects of ferroelectric heating on the switching characteristics in VDF/TrFE copolymer thin films

Polarization reversal in a ferroelectric is accompanied by heat generation which causes a temperature rise depending on thermal boundary conditions. An adiabatic condition yields (E: electric field, D: electric displacement, C: heat capacity). The copolymer of vinylidene fluoride (VDF) and trifluoroethylene (TrFE) copolymer is expected to generate a large amount of heat because of its large remanent polarization and coercive field. In this paper, we examine the effects of ferroelectric heating on the switching characteristics of VDF/TrFE copolymer film on a glass substrate.