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Internal Stress Generation During Switching of Ferroelectrics

Published online by Cambridge University Press:  01 February 2011

Anja Haug
Affiliation:
Materials Science Center, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
Patrick R. Onck
Affiliation:
Materials Science Center, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
Erik Van der Giessen
Affiliation:
Materials Science Center, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Abstract

Progressive switching of grains in ferroelectric materials leads to internal stresses, which may give rise to degradation of the material or even fracture. Here we propose a two-dimensional multigrain model for ferroelectric polycrystal. The numerical computations employ the nonlinear micromechanics model of Huber et al. [1] for each grain. Results for the macroscopic response, butterfly and hysteresis loops, as well as internal stress and electric field distributions are presented.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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References

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