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(Color online) Temperature dependence of bending deformation of the BST sample and the rate of the deformation change measured at force during a thermal cycle starting with cooling.
(Color online) Temperature dependence of dynamic modulus and mechanical loss measured at force during a thermal cycle.
(Color online) Temperature dependent deformation measured at various applied forces. Inset (a) shows the deformation as a function of applied force at several given temperatures and inset (b) shows the intensities of x-ray reflections (002) and (200) measured at room temperature from the bottom of the mechanical-poled (∇) and an initial unstressed (엯) samples.
(Color online) Temperature dependence of lattice constants, cell volume, and domain switching strain of the BST determined by x-ray diffractions measured at various temperatures. The insets are the schematic configurations of the permissible domain switching directions in pseudocubic for each phase.
The polar direction, permissible ferroelastic domain switching, and the definition of domain switching strain for tetragonal, orthorhombic, and rhombohedral, respectively. The crystal structure for all the phases are described in pseudocubic.
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