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Proceedings Paper

A ferroelastic switching model for lead zirconate-titanate (PZT)
Author(s): Brian L. Ball; Ralph C. Smith; Sang-Joo Kim; Stefan Seelecke
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Paper Abstract

This paper develops a macroscopic polarization switching model which characterizes the ferroelastic switching mechanisms inherent to lead zirconate-titanate (PZT) in a manner suitable for subsequent transducer and control design. We construct Helmholtz and Gibbs energy relations at the lattice level which quantify the internal and electrostatic energy associated with 90 and 180 degree dipole orientations. Equilibrium relations appropriate for homogeneous materials in the presence of thermal relaxation are determined by balancing the Gibbs and relative thermal energies using Boltzmann principles. Macroscopic models suitable for nonhomogeneous, polycrystalline compounds are constructed through stochastic homogenization techniques. Attributes and limitations of the model are illustrated through comparison with experimental PLZT data.

Paper Details

Date Published: 19 May 2005
PDF: 9 pages
Proc. SPIE 5757, Smart Structures and Materials 2005: Modeling, Signal Processing, and Control, (19 May 2005); doi: 10.1117/12.599898
Show Author Affiliations
Brian L. Ball, North Carolina State Univ. (United States)
Ralph C. Smith, North Carolina State Univ. (United States)
Sang-Joo Kim, Univ. of Seoul (South Korea)
Stefan Seelecke, North Carolina State Univ. (United States)


Published in SPIE Proceedings Vol. 5757:
Smart Structures and Materials 2005: Modeling, Signal Processing, and Control
Ralph C. Smith, Editor(s)

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