Dong Shuxiang, Li Jie-Fang, Viehland Dwight
Materials Science and Engineering Department, Virginia Tech, Blacksburg, VA 24061, USA.
IEEE Trans Ultrason Ferroelectr Freq Control. 2003 Oct;50(10):1253-61. doi: 10.1109/tuffc.2003.1244741.
This paper presents a novel, long-type of magnetostrictive and piezoelectric laminate composite design in which the layers are, respectively, magnetized/poled along their length axes, and a theory for modeling its behavior. Using piezoelectric and magnetostrictive constitutive equations, and an equation of motion, a magneto-elastoelectric bieffect equivalent circuit is developed. The circuit is used to predict the longitudinal and transverse magnetoelectric (ME) voltage coefficients of our Terfenol-D/Pb(Zr1-xTix)O3 laminate design. It is found that the longitudinal ME voltage coefficient is significantly higher (approximately 5x) than the transverse one, and that our new laminate design has significantly higher ME voltage coefficients under small applied direct current (DC) magnetic bias fields than designs reported previously by other groups. Experimental values were found to be coincidental with predicted ones.
本文提出了一种新型的长型磁致伸缩和压电层合复合材料设计，其中各层分别沿其长度轴磁化/极化，并给出了一种对其行为进行建模的理论。利用压电和磁致伸缩本构方程以及运动方程，建立了磁电双效等效电路。该电路用于预测我们的铽镝铁合金/锆钛酸铅层合设计的纵向和横向磁电（ME）电压系数。结果发现，纵向ME电压系数明显高于横向（约5倍），并且在小直流偏置磁场下，我们的新型层合设计的ME电压系数比其他研究小组之前报道的设计要高得多。实验值与预测值相符。
