Wang Yaojin, Hasanyan Davresh, Li Menghui, Gao Junqi, Li Jiefang, Viehland Dwight
IEEE Trans Ultrason Ferroelectr Freq Control. 2013 Jun;60(6):1227-33. doi: 10.1109/TUFFC.2013.2686.
A theoretical model for the multi-push-pull configuration of magnetoelectric (ME) laminated composites comprising magnetostrictive and piezoelectric layers with interdigitated electrodes encapsulated in polyimide film is presented. Analytical solutions for the ME voltage coefficient αE, ME charge coefficient αQ, noise charge density and equivalent magnetic noise were derived. Parametric studies are presented to evaluate the influence of material properties and polyimide film geometries. The results show that the value of αE was determined by the parameters of the magnetostrictive and piezoelectric phases, and that the values of αQ and noise charge density were determined not only by the component parameters, but also by the volume fraction of the piezoelectric phase and polyimide film geometry. The equivalent magnetic noise had no dependence on the polyimide film geometry, but rather was determined by the component parameters and the volume fraction of the piezoelectric phase. Theoretical and experimental results are compared and shown to have good agreement with each other.
提出了一种磁电（ME）层压复合材料多推挽配置的理论模型，该复合材料由磁致伸缩层和压电层组成，带有封装在聚酰亚胺薄膜中的叉指电极。推导了ME电压系数αE、ME电荷系数αQ、噪声电荷密度和等效磁噪声的解析解。进行了参数研究以评估材料特性和聚酰亚胺薄膜几何形状的影响。结果表明，αE的值由磁致伸缩相和压电相的参数决定，αQ和噪声电荷密度的值不仅由组分参数决定，还由压电相的体积分数和聚酰亚胺薄膜几何形状决定。等效磁噪声与聚酰亚胺薄膜几何形状无关，而是由组分参数和压电相的体积分数决定。将理论结果与实验结果进行了比较，结果表明二者吻合良好。
