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Spin-wave bound modes in a circular array of magnetic inclusions embedded into a metallized ferromagnetic thin-film matrix

机译:嵌入金属化铁磁薄膜基质中的磁性包裹体圆形阵列中的自旋波束缚模式

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摘要

A general theory of forward volume magnetostatic spin-wave multiple scattering by a finite two-dimensional ensemble of cylindrical magnetic inclusions in a ferromagnetic film (matrix) metallized from both sides is developed. It is predicted that bound spin-wave modes are excited around these inclusions. The set of self-consistent equations for spin-wave multiple scattering inside the matrix with inclusions is obtained by using an invariant addition theorem for the cylindrical wave functions. This set of equations is solved by an iterative process. We derive simple expressions for eigenmodes (bound modes) in a form of Bloch-like spin waves propagating along the inclusion circular array. The theory is illustrated on practically significant examples: (ⅰ) bound-mode excitation by propagating spin waves; (ⅱ) helix components of the spin-wave-scattered field around magnetic inclusions; and (ⅲ) a high-quality spin-wave resonator based on a small number of magnetic inclusions.
机译:提出了从两侧金属化的铁磁膜(矩阵)中的圆柱形磁性夹杂物的有限二维整体对正向体积静磁自旋波多重散射的一般理论。预计在这些夹杂物周围激发束缚自旋波模式。通过使用圆柱波函数的不变加法定理,获得了包含内含物的矩阵内部自旋波多重散射的自洽方程组。这组方程是通过迭代过程求​​解的。我们以沿包含圆阵列传播的类似Bloch的自旋波的形式导出本征模(绑定模)的简单表达式。在实际的重要例子中说明了该理论:(ⅰ)通过传播自旋波的束缚模式激发; (ⅱ)磁性包裹体周围自旋波散射场的螺旋分量; (ⅲ)基于少量磁性夹杂物的高质量自旋波谐振器。

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  • 来源
    《Physical review》 |2015年第21期|214419.1-214419.13|共13页
  • 作者单位

    Kotelnikov Institute of Radio-engineering and Electronics of RAS, 11-7 Mokhovaya Street, Moscow, 125009, Russia;

    Kotelnikov Institute of Radio-engineering and Electronics of RAS, 11-7 Mokhovaya Street, Moscow, 125009, Russia ,Moscow Institute of Physics and Technology, 9 Instituskij pereulok, Dolgoprudny, 141700, Moscow Region, Russia;

    Kotelnikov Institute of Radio-engineering and Electronics of RAS, 11-7 Mokhovaya Street, Moscow, 125009, Russia ,Moscow Institute of Physics and Technology, 9 Instituskij pereulok, Dolgoprudny, 141700, Moscow Region, Russia;

    Kotelnikov Institute of Radio-engineering and Electronics of RAS, 11-7 Mokhovaya Street, Moscow, 125009, Russia ,Moscow Institute of Physics and Technology, 9 Instituskij pereulok, Dolgoprudny, 141700, Moscow Region, Russia ,Saratov State University, 112 Bol'shaya Kazach'ya, Saratov, 410012, Russia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    spin waves;

    机译:自旋波;

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