An effective mechanism that generates large recoverable electric field induced strains in ferroelectric islands is studied by phase-field modeling. The large strains originate from the reversible 90° domain switching between a1 (a2) domains and c domains, driven by an applied electric field and an internal stress field. The electric field induced strains could be effectively controlled by the magnitude of island-substrate misfit and the aspect ratio of islands.
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Large electric field induced strains in ferroelectric islands
Appl. Phys. Lett. 96, 132901 (2010); doi:10.1063/1.3373915 (3 pages)
Online Publication Date: 29 March 2010
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http://apl.aip.org/applab/v96/i13