DIELECTRIC AND ELECTROSTRICTIVE PROPERTIES OF 0.9PMN-0.1PT MULTILAYERCERAMICS WITH ZNO ADDITIVE

Multilayer ceramics based on the 0.9PMN-0.1PT were fabricated by tape casting and their dielectric and electrostrictive properties were inve stigated as a function of the number of active layers. The 0.9PMN-0.1P T ceramics modified with various amounts of ZnO were prepared by molte n salt synthesis. An increase in the number of active layers led to li near increases in levels of capacitance and displacement. These proper ties increased with up to the 2 mol% ZnO addition and then decreased w ith further addition regardless of number of active layers. In the cas e of 2 mol% ZnO addition, the specimens consisting of four active laye rs showed a maximum dielectric constant of 25,200 and electrostrictive strain of 5.8 x 10(-4) at 10 kV/cm. These results can be explained by microstructure analysis.