The Poling Behavior of Lead Titanate - Polymer Composites

Abstract

The polability of two piezoelectric lead titanate-polymer composites made by dispersing lead titanate powder either in an epoxy resin or in an ethylene propylene rubber matrix and forming into discs or plates was investigated by measuring the piezoelectric charge coefficient ,d33, as a function of the poling time,temperature,and applied electrical field. The fractional integrated intensity ratio of the (001) and (100) x-ray diffraction peaks was determined and used to follow the 90' domain realignment during the poling.Its relationship to the d33 indicates ghat the 90' domain motion precedes the 180 domain reversal.