Polarization switching of ferroelectric polycrystals: finite element modeling and simulations

Sang Joo Kim

doi:10.1117/12.484197

13 August 2003 Polarization switching of ferroelectric polycrystals: finite element modeling and simulations

Sang Joo Kim

Proceedings Volume 5053, Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics; (2003) https://doi.org/10.1117/12.484197
Event: Smart Structures and Materials, 2003, San Diego, California, United States

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.

Citation Download Citation

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); https://doi.org/10.1117/12.484197

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