13 August 2003 Polarization switching of ferroelectric polycrystals: finite element modeling and simulations
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Abstract
A 3D constitutive model for polarization switching in ferroelectric ceramics is presented and implemented into a finite element code. The developed code is used to investigate the nucleation and growth of new domains in a ferroelectric thin film, which is pulsed upward initially and whose bottom electrode is grounded. Then a point on the top surface of the film is subjected to a constant positive electric potential for a certain period of time, leading to a polarization switching downward. The distribution of electric field and polarization are not homogeneous within the film. The evolution of switched zone is calculated and qualitatively compared with experimental observations.
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Sang Joo Kim, Sang Joo Kim, } "Polarization switching of ferroelectric polycrystals: finite element modeling and simulations", Proc. SPIE 5053, Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics, (13 August 2003); doi: 10.1117/12.484197; https://doi.org/10.1117/12.484197
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