Title :
Stable and metastable ferroelectric polarization analyzed by the ramp voltage technique
Author :
Wisniewski, C. ; Ferreira, G. F Leal ; Faria, R.M. ; Giacometti, J.A.
Author_Institution :
Inst. de Fisica, Univ. de Sao Paulo, Sao Carlos, Brazil
Abstract :
The study of the stable and the metastable ferroelectric polarization of poly(vinylidene fluoride), PVDF, was performed using two successive equal sign ramp voltages, mediated by a short-circuit period. Rates from 10 V/s up to 0.7 MV/s were used. Results showed that they follow different formation kinetics; that the stable part decreases for higher ramp voltage rates and its apparent coercive field increases.
Keywords :
dielectric polarisation; ferroelectric switching; polymers; stability; PVDF; coercive field; formation kinetics; metastable ferroelectric polarization; poly(vinylidene fluoride); ramp voltage technique; short-circuit period; stable ferroelectric polarization; Current measurement; Ferroelectric materials; Hysteresis; Kinetic theory; Metastasis; Performance analysis; Performance evaluation; Polarization; Spectral analysis; Voltage;
Conference_Titel :
Electrets, 2002. ISE 11. Proceedings. 11th International Symposium on
Print_ISBN :
0-7803-7560-2
DOI :
10.1109/ISE.2002.1042982
