Magnetization reversal in Co/Pd nanostructures and films
Magnetization reversal in Co/Pd nanostructures and films
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DOI：
10.1063/1.1849572
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发表时间：
2005-05-15
影响因子：
3.2
通讯作者：
Terris, BD
中科院分区：
文献类型：
--
作者：
Hu, G;Thomson, T;Terris, BD
当薄膜沉积到图案化的岛上时，反转具有垂直各向异性的Co/Pd多层薄膜所需的磁场大大增加。反转场随Co厚度的变化表明岛切换场主要由各向异性决定。对于足够小的岛屿，反转场接近于使用 Stoner-Wohlfarth (SW) 模型计算的反转场，并且这些小岛显示出预期的 SW 角度依赖性。对于较大的岛屿也观察到类似的西南角依赖性。我们认为，对于较大的岛，反转是由成核事件控制的，该成核事件具有 SW 特征，随后是快速畴壁运动。 (c) 2005 年美国物理研究所。
The magnetic field required to reverse a Co/Pd multilayer film with perpendicular anisotropy is greatly increased when the film is deposited onto patterned islands. The variation of the reversal field with Co thickness demonstrates that the island switching field is determined principally by the anisotropy. For sufficiently small islands the reversal field is close to that calculated using the Stoner-Wohlfarth (SW) model and these small islands show the expected SW angle dependence. A similar SW angle dependence is also observed for the larger islands. We propose that for the larger islands reversal is governed by a nucleation event, which has SW characteristics, followed by rapid domain wall motion. (c) 2005 American Institute of Physics.