Abstract
The ferroelectric critical point has been found in a ferroelectric polymer by exploring the influence of the electric field on the paraelectric-ferroelectric phase transition. Dielectric and pyroelectric measurements on 30-monolayer-thick films of the crystalline copolymer poly(vinylidene fluoride-trifluoroethylene) grown by Langmuir-Blodgett deposition show a single hysteresis loop below the zero-field phase transition temperature double hysteresis loops between and the critical temperature and no hysteresis above where the critical electric field is
- Received 10 September 1997
DOI:https://doi.org/10.1103/PhysRevB.57.25
©1998 American Physical Society