Table of Contents Author Guidelines Submit a Manuscript
Advances in Condensed Matter Physics
Volume 2012, Article ID 383728, 18 pages
http://dx.doi.org/10.1155/2012/383728
Research Article

Modeling of Small DC Magnetic Field Response in Trilayer Magnetoelectric Laminate Composites

1Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
2Ramta Division, Israel Aerospace Industries, P.O. Box 323, Beer-Sheva 84105, Israel
3Physics Department, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
4Department of Mechanical Engineering and Mechatronics, Faculty of Engineering, Ariel University Center of Samaria, P.O. Box 3, Ariel 40700, Israel
5Department of Mechanical Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel

Received 24 August 2011; Accepted 11 December 2011

Academic Editor: Mirza Bichurin

Copyright © 2012 B. Zadov et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We consider a magnetoelectric laminate which comprises two magnetostrictive (Ni) layers and an in-between piezoelectric layer (PZT). Using the finite-element method-based software COMSOL, we numerically calculate the induced voltage between the two faces of the PZT piezoelectric layer, by an external homogeneous small-signal magnetic field threading the three-layer Ni/PZT/Ni laminate structure. A bias magnetic field is simulated as being produced by two permanent magnets, as it is done in real experimental setups. For approaching the real materials’ properties, a measured magnetization curve of the Ni plate is used in the computations. The reported results take into account the finite-size effects of the structure, such as the fringing electric field effect and the demagnetization, as well as the effect of the finite conductivity of the Ni layers on the output voltage. The results of the simulations are compared with the experimental data and with a widely known analytical result for the induced magnetoelectric voltage.