Frequency dependence of magnetoelectric interactions in layered structures of ferromagnetic alloys and piezoelectric oxides
Frequency dependence of magnetoelectric interactions in layered structures of ferromagnetic alloys and piezoelectric oxides
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DOI：
10.1007/s00339-003-2293-3
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发表时间：
2003-07
期刊：
影响因子：
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通讯作者：
U. Laletsin;N. Padubnaya;G. Srinivasan;C. P. DeVreugd
中科院分区：
文献类型：
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作者：
U. Laletsin;N. Padubnaya;G. Srinivasan;C. P. DeVreugd
磁致伸缩相和压电相的层状结构中的磁电（ME）相互作用由机械变形介导。在这里，我们讨论的双层和三层的Permendur，铁磁合金，和锆钛酸铅的ME耦合的频率依赖性。ME电压系数与频率曲线的数据显示，在机电谐振的巨大ME耦合。90 V/cm Oe的最大电压系数比低频值高三个数量级。横向场的ME相互作用比纵向场强一个数量级。这些结果与理论相符。因此，共振ME效应是一种提高复合材料中磁场-电场转换效率的新工具。
Magnetoelectric (ME) interactions in layered structures of magnetostrictive and piezoelectric phases are mediated by mechanical deformation. Here we discuss the frequency dependence of ME coupling in bilayers and trilayers of Permendur, a ferromagnetic alloy, and lead zirconate titanate. Data on ME voltage coefficient versus frequency profiles reveal a giant ME coupling at electromechanical resonance. The maximum voltage coefficient of 90 V/cm Oe is three orders of magnitude higher than low-frequency values. The ME interactions for transverse fields are an order of magnitude stronger than for longitudinal fields. These results are in agreement with theory. The resonance ME effect, therefore, is a novel tool for enhancing the magnetic-to-electric field conversion efficiency in the composites.