A Model for Simulating Polarization Switching and AF-F Phase Changes in Ferroelectric Ceramics

Author:

Chen W.,Lynch C. S.1

Affiliation:

1. School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332

Abstract

A computational micromechanics model for polycrystalline ferroelectric ceramics developed by Chen and Lynch (1997) is modified and applied to the simulation of ferroelectric and ferroelastic switching of the tetragonal and the rhombohedral crystal structures, and to antiferroelectric to ferroelectric phase changes. Interactions between different grains in the ceramic are considered. Two switching criteria are used, one for ferroelectric switching and one or phase changes. Experimental results for both types of materials are simulated.

Publisher

SAGE Publications

Subject

Mechanical Engineering,General Materials Science

Reference8 articles.

1. Chan, K. H. and Hagood,N. W. 1995, Proc. SPIE Structures and Materials, (edited by N. W. Hagood) 2190:194-202.

2. Ferroelectric/ferroelastic interactions and a polarization switching model

3. The effect of uniaxial stress on the electro-mechanical response of 8/65/35 PLZT

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