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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Geometrical complexity of the antidots unit cell effect on the spin wave excitations spectra
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Geometrical complexity of the antidots unit cell effect on the spin wave excitations spectra

机译：对旋转波激发谱的解毒单细胞效应的几何复杂性

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摘要

Three types of antidot lattices (ADLs) based on a permalloy thin film, with increasing complexity of the unit cell: simple square, bi-component square, and wave-like ADLs were studied experimentally using both ferromagnetic resonance and Brillouin light scattering spectroscopy techniques. An additional small antidot placed in the center of the square unit cell induces significant modification of the ADL spin-wave spectrum and changes its dependence on the orientation of the in-plane applied magnetic field. The introduction of air-gaps connecting small and large antidots transforms the system into the wave-like ADL and results in further changes in the spin-wave spectrum, including a strong discrimination between two mutually orthogonal principal directions of the ADL in terms of spin-wave propagation. We also point out the impact of defected holes on the obtained spectra. The micromagnetic simulations and the calculation based on the plane wave method satisfactorily confirmed the experimental results.
机译：使用铁磁共振和布里渊光散射光谱技术实验研究了基于渗透合金薄膜的三种类型的反晶薄膜的反晶薄膜（ADL），随着单位细胞的复杂性：简单的方形，双组分正方形和波样ADL。放置在方形单元电池的中心的额外的小点点会引起ADL旋转波谱的显着改变，并改变其对面内施加磁场的取向的依赖性。连接小和大点的空气间隙的引入将系统转换为波样ADL，并导致旋转波谱的进一步变化，包括在旋转方面的两个相互正交主题之间的强度辨别 - 波传播。我们还指出了截面孔对所获得的光谱的影响。基于平面波法的微磁性模拟和计算令人满意地证实了实验结果。

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