Effect of Bias Magnetic Field on Magnetoelectric Characteristics in Magnetostrictive/Piezoelectric Laminate Composites

• Journal title : Journal of Magnetics
• Volume 20, Issue 4,  2015, pp.347-352
• Publisher : The Korean Magnetics Society
• DOI : 10.4283/JMAG.2015.20.4.347
Title & Authors
Effect of Bias Magnetic Field on Magnetoelectric Characteristics in Magnetostrictive/Piezoelectric Laminate Composites
Chen, Lei; Luo, Yulin;

Abstract
The magnetoelectric (ME) characteristics for Terfenol-D/PZT laminate composite dependence on bias magnetic field is investigated. At low frequency, ME response is determined by the piezomagnetic coefficient $\small{d_{33,m}}$ and the elastic compliance $\small{s_{33}^H}$ of magnetostrictive material, $\small{d_{33,m}}$ and $\small{s_{33}^H}$ for Terfenol-D are inherently nonlinear and dependent on $\small{H_{dc}}$, leading to the influence of $\small{H_{dc}}$ on low-frequency ME voltage coefficient. At resonance, the mechanical quality factor $\small{Q_m}$ dependences on $\small{H_{dc}}$ results in the differences between the low-frequency and resonant ME voltage coefficient with $\small{H_{dc}}$. In terms of $\small{{\Delta}E}$ effect, the resonant frequency shift is derived with respect to the bias magnetic field. Considering the nonlinear effect of magnetostrictive material and $\small{Q_m}$ dependence on $\small{H_{dc}}$c, it predicts the low-frequency and resonant ME voltage coefficients as a function of the dc bias magnetic field. A good agreement between the theoretical results and experimental data is obtained and it is found that ME characteristics dependence on $\small{H_{dc}}$ are mainly influenced by the nonlinear effect of magnetostrictive material.
Keywords
composite materials;mechanical quality factor;bias magnetic field;Magnetoelectric (ME);
Language
English
Cited by
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