A multipeak phenomenon of magnetoelectric coupling in Terfenol-D/P(VDF-TrFE)/Terfenol-D laminates
A multipeak phenomenon of magnetoelectric coupling in Terfenol-D/P(VDF-TrFE)/Terfenol-D laminates
复制标题
Terfenol-D/P(VDF-TrFE)/Terfenol-D层压板中磁电耦合的多峰现象
DOI：
10.1063/1.3511747
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发表时间：
2010-11-15
影响因子：
3.2
通讯作者：
Yang, W.
中科院分区：
文献类型：
--
作者：
Fang, F.;Shan, S. C.;Yang, W.
研究了Terfenol-D/P（VDF-TrFE）/Terfenol-D叠层中磁电耦合随外加静磁场和交变磁场频率的变化规律。绘制了ME系数（αME）随Hs和交变磁场频率变化的三维曲面图。景观突出了三个字符串的共振峰和一个额外的峰对应的最大的压磁系数d11，Terfenol-D板。基于Terfenol-D的本构关系，发现共振是由磁性层在外加交变磁场下的机械振荡引起的。铁磁共振频率可以通过改变Hs来调谐。有限元模拟与实验数据吻合良好。这使我们能够得出结论，三个谐振模式分别对应于长度，宽度和双轴方向的振荡。
The magnetoelectric (ME) coupling in Terfenol-D/P(VDF-TrFE)/Terfenol-D laminate is investigated as a function of the applied static magnetic field (Hs) and the frequency of the alternating magnetic field. A three-dimensional surface chart of ME coefficients (αME) versus Hs and frequency of the alternating magnetic field is drawn. The landscape highlights three strings of resonance peaks and an additional peak corresponding to the maximum of the piezomagnetic coefficient d11,m of the Terfenol-D plate. Based on the constitutive relations of Terfenol-D, the resonances are found to be caused by the mechanical oscillation of the magnetic layer under the applied alternating magnetic field. The ferromagnetic resonance frequency can be tuned by varying Hs. Finite element simulations fit well with the experimental data. That enables us to conclude that three resonance modes correspond to oscillations in length-, width-, and biaxial directions, respectively.