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17 April 2007 A generalized energy model for the behavior of single-crystal magneto-electric composites
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Abstract
This paper explores a unified energy-based approach to model the non-linear behavior of both magnetostrictive and piezoelectric materials. While the energy-approach developed by Armstrong has been shown to capture the magnetostrictive behavior of materials such as Terfenol-D1 and Iron-Gallium2 along different crystallographic directions, extending this approach to piezoelectric materials presents a considerable challenge. Some piezo-electric materials such as PMN-PT and BaTiO3 may undergo phase changes under applied electric fields and stress in addition to polarization switching. A modeling approach is developed in this paper to capture these effects. Finally, it is shown that the constitutive behavior for the piezo-electric/magnetostrictive layers, coupled by a simple blocked-force approach, is likely to model the behavior of magneto-electric composites.
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Jayasimha Atulasimha, George Akhras, and Alison B. Flatau "A generalized energy model for the behavior of single-crystal magneto-electric composites", Proc. SPIE 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007, 65260V (17 April 2007); https://doi.org/10.1117/12.714706
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