Abstract
The effects of electric field strength and mechanical compressive stress on the displacement of multilayered ceramic actuator, stacked alternatively 0.2 (PbM <TEX>$n_{1}$</TEX>3/N <TEX>$b_{2}$</TEX>3/ <TEX>$O_3$</TEX>)-0.8(PbZ <TEX>$r_{0.475}$</TEX> <TEX>$Ti_{0.525}$</TEX> <TEX>$O_3$</TEX>) ceramic thin films and 70Ag-30Pd electrodes were investigated. Because the actuators were designed to stack ceramic layer and electrode layer alternatively, the ceramic-electrode interfaces may act as a resistance to motion of domain wall. so the polarization and strain were affected by the amount of 180<TEX>$^{\circ}$</TEX>domain, electric field strength and mechanical compressive stress. Consequently, the change of polarization, displacement with respect to field strength, and mechanical compressive stress were likely to be caused by readiness of the domain wall movement around the ceramic-electrode interfaces.ces.
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