Slot Line Waveguide Induced Magnetization Dynamics of Perpendicularly Magnetized La-YIG Thin Film
Slot Line Waveguide Induced Magnetization Dynamics of Perpendicularly Magnetized La-YIG Thin Film
复制标题
垂直磁化 La-YIG 薄膜槽线波导感应磁化动力学
DOI：
10.1109/tmag.2021.3089769
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发表时间：
2022
影响因子：
2.1
通讯作者：
Endo Yasushi
中科院分区：
文献类型：
--
作者：
Koda Tetsunori;Muroga Sho;Endo Yasushi
我们研究了由槽线波导在垂直于平面施加的磁场下感应的 La 掺杂钇铁石榴石薄膜中的磁化动力学。磁化动态很大程度上取决于槽线波导尺寸，特别是激励条件的数量随着线宽和线之间间隙的扩大而增加。当向薄膜平面施加磁场时，不会观察到这种增加。激发是由线周围的局部磁化动力学与来自线另一侧的自旋波之间的相互作用引起的。当垂直于薄膜施加磁场时，会发射正向体积静磁自旋波。它们的磁场对波长变化的依赖性是非常渐进的，使得共振条件的满足比面内磁化薄膜容易得多。
We study the magnetization dynamics in La-doped yttrium iron garnet thin film induced by a slot line waveguide with the magnetic field applied perpendicular to the plane. The magnetization dynamics depend significantly on the slot line waveguide dimensions, particularly the number of excitation conditions increases with the enlargement of linewidth and the gap between the lines. Such an increase is not observed when the magnetic field is applied to the film plane. The excitation is caused by the interaction between the local magnetization dynamics around the line and the spin waves coming from the other side of the line. Forward volume magnetostatic spin waves are emitted when the magnetic field is applied perpendicular to the film. Their magnetic field dependence of the wavelength change is very gradual, allowing the satisfaction of the resonance condition to be much easier than the in-plane magnetized film.