磁电多铁性复合材料由于具有磁电耦合的特性,在存储器、传感器等领域具有广泛的应用前景,近年来成为该领域研究的前沿问题。本文采用有限元方法对叠层块状磁电多铁性复合材料的磁电耦合效应进行计算分析,研究了边界条件、尺寸、粘接层的厚度以及材料性能对磁电耦合效应的影响,以期为磁电多铁性复合材料器件设计提供理论依据。研究表明,上下外表面z方向固定、长宽比的增大、铁电层所占比例的增大、粘接层厚度的减小及杨氏模量的增加均能提高磁电多铁性复合材料的磁电耦合系数。
Multiferroic composites,which possess magnetoelectric coupling effects,have recently been one of the main research topics for their applications in random access memories,sensors,etc.Finite element method was used to study the magnetoelectric coupling efficiency of layered multiferroic composites in various conditions.Effects of boundary conditions,size,thickness and Young＇s modulus of adhesive on the magnetoelectric coupling efficiency were investigated.Results show that fixed upper and lower boundary condition,larger aspect ratio,higher ferroelectrics proportion,smaller adhesive thickness and larger Young＇s modulus can enhance the magnetoelectric coupling efficiency.
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