Theory of switching of multiaxial ferroelectrics (the main stages) |
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| Authors: | M A Zakharov S A Kukushkin A V Osipov |
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| Institution: | (1) Novgorod State University, ul. Sankt-Peterburgskaya 41, Novgorod, 173003, Russia;(2) Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, Vasil’evskii Ostrov, Bol’shoi pr. 61, St. Petersburg, 199178, Russia |
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| Abstract: | The kinetics of switching of multiaxial ferroelectric crystals with 180° and 90° domains under conditions of normal and layer-by-layer domain growth is studied using the multidimensional theory of first-order phase transitions. The main stages of the process of switching of a multiaxial ferroelectric are considered under the assumption that repolarized cylinder-shaped domains grow three-dimensionally. A closed set of equations describing the kinetics of switching is derived with allowance for a change in repolarization in the course of the phase transition. Equations for the time-dependent switching current are derived. The main characteristics of switching are compared qualitatively with the experimental data on barium titanate. |
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