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

被引:108
作者
Srinivasan, G [1 ]
De Vreugd, CP
Laletin, VM
Paddubnaya, N
Bichurin, MI
Petrov, VM
Filippov, DA
机构
[1] Oakland Univ, Dept Phys, Rochester, MI 48309 USA
[2] Natl Acad Sci Belarus, Inst Tech Acoust, Vitebsk 210717, BELARUS
[3] Novgorod State Univ, Dept Phys & Engn, Veliky Novgorod 173003, Russia
关键词
D O I
10.1103/PhysRevB.71.184423
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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 Co-Fe-V alloy, and lead zirconate titanate were studied. Measurements of the magnetoelectric (ME) voltage coefficient alpha(E) indicate a strong ME coupling in the low-frequency range and a giant ME effect due to EMR at 200-300 kHz for radial modes and at similar to 2.7 MHz for thickness modes. Data were obtained for the bias field H dependence of two key parameters, the EMR frequency f(r) and the ME coefficient alpha(E,R) at resonance. With increasing H, an increase in f(r) and a rapid rise and fall in alpha(E,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 (Delta E effect) and (ii) variation in the piezomagnetic coefficient that manifests as a change in alpha(E,R). Theoretical profiles of alpha E vs frequency and estimates of frequency shift based on the Delta E effect are in excellent agreement with the data.
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页数:6
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