IMF2017

PZT ceramics are extensively used as sensors and actuators in a variety of applications. Typically, these ceramics show strains between 0.1-0.2% depending on the specific materials and compositions. In contrast, selected Sr-modified PZT compositions (95:5) situated at the antiferroelectric (AFE)-ferroelectric (FE) phase boundary display AFE-FE phase change upon application of the electric field and large strain capabilities (~0.8%). In addition, some of these compositions also show excellent stability against cyclic fatigue damage to over 106 electric cycles. The processing approaches and origins of the large strains and fatigue mechanisms in these ceramics will be presented and discussed.