Abstract

The effect of the number and thickness of permalloy layers and the thickness and material of interlayers on the value of magnetic impedance (MI) effect of multilayer film structures is theoretically analyzed in this work. The distributions of electromagnetic fields over the thickness of the film structure and MI are obtained on the basis of the joint solution of the Maxwell equations and the Landau–Lifshitz equation. The performed analysis shows that the MI increases with decreasing number of permalloy layers and corresponding increase in their thickness. It is established that the values of conductivities of the central nonmagnetic layer and interlayers influence the MI value differently. It is predicted that a further increase in MI may be achieved by using interlayers made of ferromagnetic materials.

中文翻译：

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坡莫合金基多层膜结构参数对磁阻效应灵敏度的影响

摘要

这项工作理论上分析了坡莫合金层的数量和厚度以及中间层的厚度和材料对多层膜结构的磁阻抗（MI）效应值的影响。在麦克斯韦方程和Landau–Lifshitz方程的联合解的基础上，获得了薄膜结构和MI厚度上电磁场的分布。进行的分析表明，MI随坡莫合金层数的减少以及其厚度的相应增加而增加。可以确定的是，中央非磁性层和中间层的电导率值对MI值的影响不同。可以预料，通过使用由铁磁材料制成的中间层可以进一步提高MI。