Abstract

The production process is considered, and the results of a theoretical and experimental study of the magnetoelectric effect in a multilayer structure obtained by galvanic deposition of alternating layers of nickel and tin onto a gallium arsenide substrate are presented. It is experimentally found that the use of tin as an intermediate layer in a multilayer structure decreases the mechanical stresses arising from the inconsistency of the lattice parameters at the nickel/gallium arsenide interface, which makes it possible to obtain high-quality multilayer structures with the thickness of the nickel layer of about 100 μm. On the basis of the joint solution of the equations of elastodynamics and electrostatics for the magnetostriction, piezoelectric, and buffer layers, an expression for the magnetoelectric voltage coefficient is obtained. It is theoretically shown and experimentally confirmed that the frequency dependence of the magnetoelectric coefficient has a resonant character, and the value of the resonant frequency gradually decreases with the growth in the number of layers from the value corresponding to the natural oscillation frequency of a plate made of gallium arsenide, approaching the value corresponding to the natural oscillation frequency of a plate consisting of a layer of nickel and tin, the thickness of which is equal to double the thickness of the layer of nickel. It is experimentally found that, in the region of electromechanical resonance, the obtained structures have a high quality factor Q ≅ 1000, which is more than 20-fold higher than the quality factor of the magnetoelectric structures fabricated by gluing, and have good adhesion between the layers. These structures are promising for creating devices based on the magnetoelectric effect.

中文翻译：

---

磁电多层砷化镓–镍–锡–镍结构

摘要

考虑了生产过程，并给出了通过将镍和锡的交替层电沉积到砷化镓衬底上而获得的多层结构中的磁电效应的理论和实验研究结果。实验发现，在多层结构中使用锡作为中间层可减少由镍/砷化镓界面处的晶格参数不一致引起的机械应力，从而可以得到具有高纯度的多层结构。镍层的厚度约为100μm。基于磁致伸缩层，压电层和缓冲层的弹性动力学方程和静电方程的联合解，可获得磁电压系数的表达式。从理论上证明并通过实验证实，磁电系数的频率依赖性具有共振特性，并且共振频率的值随着层数的增加而从与制成的板的固有振动频率相对应的值开始逐渐减小。砷化镓的最大振荡频率接近于由镍和锡层组成的板的自然振荡频率所对应的值，其厚度等于镍层的厚度的两倍。实验发现，在机电共振区域，所获得的结构具有较高的品质因数 并且共振频率的值随着层数的增加而从与砷化镓制成的板的固有振动频率相对应的值逐渐降低，并接近与由层构成的板的固有振动频率相对应的值。镍和锡的厚度等于镍层厚度的两倍。实验发现，在机电共振区域中，获得的结构具有较高的品质因数 并且共振频率的值随着层数的增加而从与砷化镓制成的板的固有振动频率相对应的值逐渐降低，并接近与由层构成的板的固有振动频率相对应的值。镍和锡的厚度等于镍层厚度的两倍。实验发现，在机电共振区域中，获得的结构具有较高的品质因数 其厚度等于镍层厚度的两倍。实验发现，在机电共振区域中，所获得的结构具有高品质因数 其厚度等于镍层厚度的两倍。实验发现，在机电共振区域，所获得的结构具有较高的品质因数Q ≅1000，这是超过20倍的磁结构的品质因数较高制造通过粘结，并具有层与层之间良好的粘附性。这些结构有望用于创建基于磁电效应的器件。