Title :
Ferroelectric behavior of P(VDF-TrFE) copolymer samples
Author :
Alves, Neri ; Giacometti, J.A. ; Minami, G. ; Oliveira, O.N., Jr.
Author_Institution :
Inst. Fisica Quimica de Sao Carlos, Sao Paulo, Univ., Brazil
Abstract :
Surface potential measurements are presented for corona charged P(VDF-TrFE) (polyvinylidene fluoride and trifluorethylene) samples in a constant-current corona triode. The surface potential curves display three distinct regions, characteristic of ferroelectric polymers. The results are interpreted by neglecting the intrinsic conductivity and assuming a dynamics for the electrical polarization which is usually employed in switching measurements of ferroelectric materials, but which is adapted for the constant corona charging condition
Keywords :
dielectric polarisation; ferroelectric materials; ferroelectric switching; polymer blends; polymer films; surface potential; P(VDF-TrFE) copolymer; PVDF-trifluoroethylene copolymer; constant corona charging; corona charged; ferroelectric behaviour; ferroelectric dipole switching; ferroelectric polymers; films; polarization dynamics; surface potential; Aluminum; Corona; Current measurement; Displays; Ferroelectric materials; Glass; Polarization; Surface charging; Surface discharges; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1992. Annual Report. Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0565-5
DOI :
10.1109/CEIDP.1992.283189
