360° domain wall injection into magnetic thin films
360° domain wall injection into magnetic thin films
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DOI：
10.1063/1.4828563
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发表时间：
2013-11-25
影响因子：
4
通讯作者：
Barnes, C. H. W.
中科院分区：
文献类型：
--
作者：
Oyarce, A. L. Gonzalez;Llandro, J.;Barnes, C. H. W.
我们使用微磁学模拟开发了一种用于将局部360度畴壁注入磁性薄膜纳米带的设备。在我们的模拟中，两个电流分布，阶梯和阶梯，被施加到两个非平行的电线放置在靠近，但不与电接触，磁性纳米带。我们表明，对于类似于10（12）A/m（2）的电流密度和实验上可实现的器件尺寸，这些电流脉冲产生的磁场具有足够的强度，通过塞曼耦合，然后通过朗道-Lifshitz-吉尔伯特弛豫动力学，导致稳定和局部化的360度畴壁的成核。(C)2013 AIP Publishing LLC.
We used micromagnetic simulations to develop a device for the injection of localised 360 degrees domain walls into a magnetic thin film nanostripe. In our simulations two current profiles, step and staircase, are applied to two non-parallel wires placed in close proximity to, but not in electrical contact with, the magnetic nanostripe. We show that for current densities of similar to 10(12) A/m(2) and experimentally achievable device dimensions, the magnetic fields generated by these current pulses are of sufficient strength to cause the nucleation of stable and localised 360 degrees domain walls through the Zeeman coupling followed by Landau-Lifshitz-Gilbert relaxation dynamics. (C) 2013 AIP Publishing LLC.