Physical states and properties of barium titanate films in a plane electric field |
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Authors: | V B Shirokov V V Kalinchuk R A Shakhovoi Yu I Yuzyuk |
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Abstract: | The influence of a plane electric field on the phase states of barium titanate thin films under the conditions of forced deformation has been studied. The field dependence of a complete set of material constants has been taken in the region of the c-phase, where polarization losses are absent. The material constants are calculated using equations of the piezoelectric effect derived by linearizing the nonlinear equations of state from the phenomenological; theory for barium titanate. It has been shown that there is a critical value of the field at which the electromechanical coupling coefficient reaches a maximum. |
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