A nonlinear kinetics phase-field model for ferroelectrics - Archive ouverte HAL
Communication Dans Un Congrès Année : 2022

A nonlinear kinetics phase-field model for ferroelectrics

Résumé

Ferroelectric ceramics exhibit a spontaneous electric polarization that can be reversed under the application of an electrical or mechanical loading. The method of choice to model the evolution of polarization domains are diffuse-interface models (also called phase-field models), most of them being based on the Allen-Cahn equation. The latter assumes, unlike experimental evidence, a linear relation between the velocity of domain walls and their conjugate driving force. In this work, we develop an alternative phase-field formulation that accounts for the non-linear kinetics of domain walls, an important feature with regards to rate effects in ferroelectrics.
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Dates et versions

hal-03717572 , version 1 (08-07-2022)

Identifiants

  • HAL Id : hal-03717572 , version 1

Citer

Laurent Guin, Louis Hennecart, Dennis Kochmann. A nonlinear kinetics phase-field model for ferroelectrics. 15ème colloque national en calcul des structures, Université Polytechnique Hauts-de-France [UPHF], May 2022, 83400 Hyères-les-Palmiers, France. ⟨hal-03717572⟩
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