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首页> 外文期刊>IEEE Transactions on Magnetics >Fast Moving Multiple Magnetic Bits in Permalloy Cylindrical Nanowires
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Fast Moving Multiple Magnetic Bits in Permalloy Cylindrical Nanowires

机译:坡莫合金圆柱形纳米线中的快速移动多个磁性钻头

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摘要

Controlling the movement of domain walls in magnetic nanowires is important due to the impact on the viability of data storage devices. A series of micromagnetic simulations of multiple current-induced domain walls motion (CIDWM) have been performed. Multiple CIDWM in the cylindrical permalloy nanowires display outstanding dynamic properties. In cases of different domain bits, we observed the motion of transverse domain walls (TDWs) did not show oscillatory behavior. The domain walls only changed their positions in the same direction as they propagated and kept the distance between the walls almost the same, with their internal magnetic structure unchanged. Furthermore, we have found that the TDW velocity in cylindrical thin wires was closely related to the wire thickness and showed a strong dependence on the Gilbert damping factor.
机译:由于影响数据存储设备的生存能力,因此控制磁纳米线中畴壁的移动非常重要。已经执行了多个电流感应畴壁运动(CIDWM)的一系列微磁模拟。圆柱形坡莫合金纳米线中的多个CIDWM显示出出色的动态特性。在不同域位的情况下,我们观察到横向域壁(TDW)的运动未显示出振荡行为。畴壁仅在传播时沿相同方向改变其位置,并保持壁之间的距离几乎相同,而其内部磁结构不变。此外,我们发现圆柱细线中的TDW速度与线的厚度密切相关,并且显示出对吉尔伯特阻尼因子的强烈依赖性。

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