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Proceedings Paper

Quadrupole effects on modeling piezoelectric and ferroelectric materials
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Paper Abstract

Electromechanical coupling in ferroelectric materials is extended to include the electric quadrupole. Internal lattice displacements are coupled to strain to calculate both the polarization and the quadrupole and to provide general methods to describe both acoustic and optical material behavior. Electromechanical coupling of a monodomain is first analyzed and followed by finite element phase field simulations of a 180° domain wall. A comparison between explicit electrostrictive coupling and nonlinear geometric effects is given which illustrate that phenomenological electrostriction gives exactly the same electromechanical coupling as obtained from introducing an effective field within the electrostatic Lorentz force.

Paper Details

Date Published: 28 March 2012
PDF: 10 pages
Proc. SPIE 8342, Behavior and Mechanics of Multifunctional Materials and Composites 2012, 834205 (28 March 2012); doi: 10.1117/12.917462
Show Author Affiliations
William S. Oates, The Florida State Univ. (United States)
Hongbo Wang, The Florida State Univ. (United States)


Published in SPIE Proceedings Vol. 8342:
Behavior and Mechanics of Multifunctional Materials and Composites 2012
Nakhiah C. Goulbourne; Zoubeida Ounaies, Editor(s)

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