2010/07/26 by Dragan Damjanovic, Dragan Damjanović · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Acoustic Wave Resonator Technologies #Ferroelectric and Piezoelectric Materials #Ultrasonics and Acoustic Wave Propagation #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.3479479
accepted in Appl. Phys. Lett./ presented at APS 2010 March meeting
arxiv created 2010/07/26 · openalex publication_date 2010/08/09 · arxiv updated 2015/05/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Many ferroelectric solid solutions exhibit enhanced electromechanical properties at the morphotropic boundary separating two phases with different orientations of polarization. The mechanism of properties enhancement is associated with easy paths for polarization rotation in anisotropically flattened free energy profile. Another mechanism of properties enhancement related to free energy flattening is polarization extension. It is best known at temperature-driven ferroelectric-paraelectric phase transitions and may lead to exceedingly large properties. Its disadvantage is temperature instability of the enhancement. In this paper a temperature-composition phase diagram is proposed that exhibits compositionally driven-phase transitions with easy paths for both polarization rotation and polarization extension.