Equivalent circuit method for resonant magnetoelectric effect in disk-shaped laminated composites

¹ Department of Applied Physics, Nanjing Tech University, 210009 Nanjing, P.R. China
² Magnetoelectronic Lab, Nanjing Normal University, 210097 Nanjing, P.R. China

^a e-mail: zhangruwl@njtech.edu.cn

Received: 27 October 2014
Revised: 10 December 2014
Accepted: 22 December 2014
Published online: 15 January 2015

Abstract

A theoretical model based on equivalent circuit analytical method has been presented for the magnetoelectric (ME) effect in disk-shaped laminated composites. The derived expressions for the ME voltage coefficient can be used to describe the frequency response of ME effect under both open circuit and finite electrical resistance load conditions. It was shown that the resonance frequency and resonant ME voltage coefficient increase with the increase in electrical resistance load in disk-shaped ME laminated composite, which is consistent with the observations for plate-shaped one. The theoretical results show good agreement with the experimental results in Tb_0.3Dy_0.7Fe_1.92 (Terfenol-D)/Pb(Zr,Ti)O₃ (PZT)/Terfenol-D disk-shaped sandwich laminated composite. This work is significant for designing ME devices and their signal-processing and electronic circuits.