Angular Dependence of the Ferromagnetic Resonance Parameters of [Ti/FeNi]6/Ti/Cu/Ti/[FeNi/Ti]6 Nanostructured Multilayered Elements in the Wide Frequency Range
Angular Dependence of the Ferromagnetic Resonance Parameters of [Ti/FeNi]6/Ti/Cu/Ti/[FeNi/Ti]6 Nanostructured Multilayered Elements in the Wide Frequency Range
复制标题
[Ti/FeNi]6/Ti/Cu/Ti/[FeNi/Ti]6 纳米结构多层元件在宽频率范围内铁磁共振参数的角度依赖性
作者：
S. V. Shcherbinin;A. Svalov;G. Y. Melnikov;G. Kurlyandskaya
采用射频溅射技术制备了长条形的软磁[Ti（6）/FeNi（50）]6/Ti（6）/Cu（500）/Ti（6）/[FeNi（50）/Ti（6）]6纳米结构多层膜。在外部磁场中使用沉积，使易磁化轴沿着短尺寸的条带取向。这种结构对于开发应用于不同应用的巨磁阻抗效应（GMI）小型磁场传感器具有重要意义。对电磁辐射的微波吸收进行了实验和理论研究，以提供尽可能完整的高频表征。采用背衬导体共面线进行了微波特性研究。基于带耗散的Bloch-Bloembergen项的Landau-Lifshitz方程，对均匀磁化GMI元件中磁化矢量的进动进行了介导化。本文应用复振幅法分析了铁磁巨磁阻抗元件在外磁场中的转动。磁化率张量x分量虚部的振幅和磁吸收随不同角度的变化关系的计算值与实验值吻合较好。
Magnetically soft [Ti(6)/FeNi(50)]6/Ti(6)/Cu(500)/Ti(6)/[FeNi(50)/Ti(6)]6 nanostructured multilayered elements were deposited by rf-sputtering technique in the shape of elongated stripes. The easy magnetization axis was oriented along the short size of the stripe using deposition in the external magnetic field. Such configuration is important for the development of small magnetic field sensors employing giant magnetoimpedance effect (GMI) for different applications. Microwave absorption of electromagnetic radiation was experimentally and theoretically studied in order to provide an as complete as possible high frequency characterization. The conductor-backed coplanar line was used for microwave properties investigation. The medialization for the precession of the magnetization vector in the uniformly magnetized GMI element was done on the basis of the Landau–Lifshitz equation with a dissipative Bloch–Bloembergen term. We applied the method of the complex amplitude for the analysis of the rotation of the ferromagnetic GMI element in the external magnetic field. The calculated and experimental dependences for the amplitudes of the imaginary part of the magnetic susceptibility tensor x-component and magnetoabsorption related to different angles show a good agreement.