Dynamics of vortex core switching in ferromagnetic nanodisks
Dynamics of vortex core switching in ferromagnetic nanodisks
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DOI：
10.1063/1.2424673
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发表时间：
2006-12-25
影响因子：
4
通讯作者：
Donohoe, G.
中科院分区：
文献类型：
--
作者：
Xiao, Q. F.;Rudge, J.;Donohoe, G.
利用微磁学模型研究了具有单一涡旋基态的纳米级坡莫合金圆盘的磁涡芯转换动力学。当具有适当强度和持续时间的面内磁场脉冲施加到涡旋结构时，在原始涡核附近产生另外两个涡旋，即圆形涡旋和反涡旋。随后，涡旋-反涡旋对消失。在湮没点处产生自旋波，并通过整个元素传播；系统的弛豫态是具有切换涡核的单个涡旋态。(C)2006年美国物理研究所。
Dynamics of magnetic vortex core switching in nanometer-scale Permalloy disk, having a single vortex ground state, was investigated by micromagnetic modeling. When an in-plane magnetic field pulse with an appropriate strength and duration is applied to the vortex structure, additional two vortices, i.e., a circular and an antivortex, are created near the original vortex core. Sequentially, the vortex-antivortex pair annihilates. A spin wave is created at the annihilation point and propagated through the entire element; the relaxed state for the system is the single vortex state with a switched vortex core. (c) 2006 American Institute of Physics.