Magnetic Domain Wall Motion in Co/Ni Nanowires Induced by a Sloped Electric Field
Magnetic Domain Wall Motion in Co/Ni Nanowires Induced by a Sloped Electric Field
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DOI：
10.1063/1.4950865
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发表时间：
2016-05
期刊：
影响因子：
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通讯作者：
K. Yamada;S. Murayama;Y. Nakatani
中科院分区：
文献类型：
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作者：
K. Yamada;S. Murayama;Y. Nakatani
近来，畴壁（DW）运动器件已经吸引了大量的关注，因为它将是非易失性信息存储器的候选者，其具有降低功耗的潜力[1]。在该装置中，DW运动由磁场或电流控制。然而，需要降低功耗。近年来，作为降低功率的新方法，已经提出了电场驱动DW运动方法[2]、[3]。在这些研究中，他们不仅使用了电场，还使用了磁场来增加DW运动的驱动力。在这项研究中，我们进行了微磁模拟，并调查DW运动，通过使用倾斜电场（SEF）。由于在这种方法中，磁性纳米线中的各向异性场可以在每个位置处改变[4]，因此它导致每个位置处的DW能量改变，因此DW仅通过该电场移动[5]。
Recently, the domain wall (DW) motion device has attracted a great deal of attention, because it will be a candidate for a nonvolatile information storage, which has a potential for reducing consumption power [1]. In this device, the DW motion is controlled by the magnetic field or the current. However, it is required to reduce the consumption power. In recent years, as a new method for reducing the power, the electric field-driven DW motion method has been proposed [2], [3]. In these studies, they used not only a electric field, but also a magnetic field for DW motion to increase the driving force. In this study, we perform the micromagnetic simulations, and investigate the DW motion by using a sloped-electric-field (SEF). Since the anisotropy field in the magnetic nanowire can be changed at each position in this approach [4], it lead to change the DW energy at each position, and accordingly, the DW moves only by this electric field [5].