Resonant magnetoelectric coupling in trilayers of ferromagnetic alloys and piezoelectric lead zirconate titanate: The influence of bias magnetic field

G. Srinivasan, C. P. De Vreugd, V. M. Laletin, N. Paddubnaya, M. I. Bichurin, V. M. Petrov, and D. A. Filippov
Phys. Rev. B 71, 184423 – Published 27 May 2005

Abstract

We present the first data and theory for the bias magnetic field dependence of magnetoelectric coupling in the electromechanical resonance (EMR) region for ferromagnetic-piezoelectric heterostructures. Trilayers of Permendur, a CoFeV alloy, and lead zirconate titanate were studied. Measurements of the magnetoelectric (ME) voltage coefficient αE indicate a strong ME coupling in the low-frequency range and a giant ME effect due to EMR at 200300kHz for radial modes and at 2.7MHz for thickness modes. Data were obtained for the bias field H dependence of two key parameters, the EMR frequency fr and the ME coefficient αE,R at resonance. With increasing H, an increase in fr and a rapid rise and fall in αE,R are measured. In our model we consider two mechanisms for the magnetic field influence on ME interactions: (i) a shift in the EMR frequency due to changes in compliance coefficients (ΔE effect) and (ii) variation in the piezomagnetic coefficient that manifests as a change in αE,R. Theoretical profiles of αE vs frequency and estimates of frequency shift based on the ΔE effect are in excellent agreement with the data.

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  • Received 28 June 2004

DOI:https://doi.org/10.1103/PhysRevB.71.184423

©2005 American Physical Society

Authors & Affiliations

G. Srinivasan and C. P. De Vreugd

  • Physics Department, Oakland University, Rochester, Michigan 48309, USA

V. M. Laletin and N. Paddubnaya

  • Institute of Technical Acoustics, National Academy of Sciences of Belarus, 210717 Vitebsk, Belarus

M. I. Bichurin, V. M. Petrov, and D. A. Filippov

  • Department of Physics and Engineering, Novgorod State University, B. S. Peterburgskaya St. 41, 173003 Veliky Novgorod, Russia

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Vol. 71, Iss. 18 — 1 May 2005

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