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Proceedings Paper

Modeling of coupling effect in magneto-electric layered composites
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Paper 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'.

Paper Details

Date Published: 5 April 2006
PDF: 9 pages
Proc. SPIE 6173, Smart Structures and Materials 2006: Smart Structures and Integrated Systems, 617317 (5 April 2006); doi: 10.1117/12.658959
Show Author Affiliations
Chia-Ming Chang, Univ. of California, Los Angeles (United States)
Gregory P. Carman, Univ. of California, Los Angeles (United States)

Published in SPIE Proceedings Vol. 6173:
Smart Structures and Materials 2006: Smart Structures and Integrated Systems
Yuji Matsuzaki, Editor(s)

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