M. Brazier et al., EFFECTS OF FINITE ELECTRICAL-RESISTANCE THE POLARIZATION MEASUREMENT OF FERROELECTRIC CAPACITORS, Integrated ferroelectrics, 18(1-4), 1997, pp. 79-89
The polarization of a Pb(Zr0.6Ti0.4)O-3 capacitor was measured before
and after fatigue using both a Sawyer-Tower circuit and the RT-66A Fer
roelectric Test Unit. Discrepancies were observed in various polarizat
ion measurements performed after fatigue. This disparity may be explai
ned by considering the effect a change in the electrical resistance of
the capacitor after fatigue has on the polarization measurements. Thi
s explanation was established by observing the effect a shunt resistor
placed in parallel with the sample capacitor has on the various polar
ization measurements.