Abstract
Due to its large piezoelectric and electrostrictive responses to an applied electric field the (1−x)Pb(Mg1/3Nb2/3)O3–xPbTiO3(PMN-PT) solid solution has been widely investigated as a promising material for different actuator applications. This paper discusses some of the recent achievements in the field of PMN-PT piezoelectric and electrostrictive actuators manufactured from PMN-PT single crystals, bulk ceramics, or thick films. The functional properties of PMN-PT materials and some representative examples of the investigated PMN-PT actuator structures and their applications are reported.
Highlights
In recent years, the fabrication of ferroelectric materials has been extensively studied, with a particular emphasis on micro- and nanodevices
This paper discusses some of the recent achievements in the field of PMN-PT piezoelectric and electrostrictive actuators manufactured from PMN-PT single crystals, bulk ceramics, or thick films
Due to the large responses of the PMN-PT material to the applied electric field, this material is suitable for actuators
Summary
The fabrication of ferroelectric materials has been extensively studied, with a particular emphasis on micro- and nanodevices. PMN-PT-based materials are characterized by a high dielectric permittivity, high piezoelectric properties, high electrostriction, and are suitable for applications in multilayer capacitors, actuators, sensors, and electro-optical devices [1, 2]. Piezoelectric and electrostrictive actuators can be used in a wide range of applications, such as micropositioners, to precisely control the positioning in low- to very-heavyload applications, miniature ultrasonic motors, and adaptive mechanical dampers [3,4,5]. In mechanical systems, these actuators can generate forces or pressures under static or high-frequency conditions and so activate a suitable mechanical device [6]. The functional properties of the PMN-PT material (single crystals, ceramics, as well as films) are discussed, and in the second section, some examples of PMN-PT actuators are summarized
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