Abstract
The pyroelectric coefficient of 0–3 composites of ferroelectric ceramic particles in a polymer matrix can be increased drastically by introducing a specified dc conductivity as explained by predictions based on the Poon-Shin model. The influence of doping with lithium chlorate on the dielectric permittivity of polyurethane has been studied to identify proper process parameters for the doping of composites. After appropriate doping the pyroelectric coefficient of 0–3 PZT/polyurethane composite is increased by more than a factor of ten at frequencies around 50 Hz.
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