LEAD LANTHANUM ZIRCONATE STANNATE TITANATE BASED ANTIFERROELECTRIC TO FERROELECTRIC PHASE SWITCHING MULTILAYER CERAMIC ACTUATORS

摘要

Lead lanthanum zirconate stannate titanate (PLZST) based antiferroelectric to ferroelectric phase switching multilayer ceramic actuators were prepared by the tape method. The ceramic powders used were synthesized by a two-step wet chemical method using colloidal processing with a composition of Pb_0.97La_0.02(Zr_0.65Sn_0.25Ti_0.10)O_3. The actuators sintered at 1000 deg C with Pd/Ag internal electrode and consisted of 20 active layer of 40 mum thick. The strain behavior of the actuator were measured and a displacement up to 1.9 mum was achieved under 240V living voltage.