Ferromagnetic resonance in periodic particle arrays
Ferromagnetic resonance in periodic particle arrays
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DOI：
10.1103/physrevb.66.132401
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发表时间：
2001-09
影响因子：
3.7
通讯作者：
S. Jung;B. Watkins;L. DeLong;J. Ketterson;V. Chandrasekhar
中科院分区：
文献类型：
--
作者：
S. Jung;B. Watkins;L. DeLong;J. Ketterson;V. Chandrasekhar
我们报告了电子束光刻产生的坡莫合金亚微米尺寸周期性粒子阵列的铁磁共振谱的测量。与平面铁磁薄膜相比，阵列的光谱显示出许多额外的共振峰，其位置很大程度上取决于外部磁场的方向和颗粒间相互作用。交流响应的时间相关微磁模拟表明，这些峰值与耦合交换和偶极自旋波模式相关。
We report on the measurements of the ferromagnetic resonance spectra of arrays of submicron size periodic particle arrays of permalloy produced by electron-beam lithography. in contrast to plane ferromagnetic films, the spectra of the arrays show a number of additional resonance peaks, whose position depends strongly on the orientation of the external magnetic field and the interparticle interaction. Time-dependent micromagnetic simulations of the ac response show that these peaks are associated with coupled exchange and dipolar spin-wave modes.