Abstract
Ferroelectrics undergo one or more crystallographic phase transitions, which involve lattice distortions. The direction of spontaneous polarization in ferroelectrics can be reoriented by an applied electric field (or mechanical stress). There is a spontaneous strain accompanying spontaneous polarization. Phase transitions and domain reorientations thus result in microdeformations. Many devices such as actuators and transducers are based on this behaviour. The origin of microdeformations in ferroelectrics and their consequences are discussed here.
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Subbarao, E.C. Microdeformations in ferroelectrics. Bull. Mater. Sci. 17, 883–891 (1994). https://doi.org/10.1007/BF02757566
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DOI: https://doi.org/10.1007/BF02757566