5 April 2006 Modeling of coupling effect in magneto-electric layered composites
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Abstract
A theoretical model is developed for the magnetoelectric (M-E) voltage coefficient α for a magnetostrictive-piezoelectric layered composite (MPLC). Three field orientations; including longitudinal, transverse, and in-plane, with two in plane geometries, 2D and 1D, are presented and studied with respect to the volume fraction of piezoelectric phase and the material properties of magnetostrictive phase. Results show that the phase volume fraction to achieve maximum M-E coupling effect is determined by the compliance of magnetostrictive phase. Higher compliance values shift α' peaks to lower piezoelectric volume fraction and weaken α' values. This study also investigates the influence of the piezomagnetic coefficient q33 and the ratio q33/q31. For constant ratio of q33/q31, larger q33 values increase the M-E coupling effect. On the contrary, changing the ratio of q33/q31 changes the relative α' values for each of the six cases. This demonstrates that the ratio q33/q31 strongly influences the selection of MPLC configurations to produce the largest α'.
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Chia-Ming Chang and Gregory P. Carman "Modeling of coupling effect in magneto-electric layered composites", Proc. SPIE 6173, Smart Structures and Materials 2006: Smart Structures and Integrated Systems, 617317 (5 April 2006); doi: 10.1117/12.658959; https://doi.org/10.1117/12.658959
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