Micromagnetic Studies of Co/Pt Multilayers With Perpendicular Anisotropy

Micromagnetic Studies of Co/Pt Multilayers With Perpendicular Anisotropy
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具有垂直各向异性的 Co/Pt 多层膜的微磁研究

DOI:
10.1109/tmag.2012.2196989
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发表时间:
2012-10
影响因子:
2.1
通讯作者:
Gao, Kai-Zhong
Gao, Kai-Zhong
中科院分区:
工程技术4区
文献类型:
--
作者:
Wei, Dan;Wang, Yi;Han, Xiu-Feng;Gao, Kai-Zhong

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建立了两个微磁模型,即采用多晶微结构的模型A和采用规则网格的模型B,用于模拟具有垂直各向异性的Co/Pt多层膜的磁滞回线。在这两个模型中,一个100 nm的尺度上的缺陷区域被引入到任何只有两个原子层的Co膜中,这在本模拟中起着关键作用。缺陷区的磁各向异性常数K比缺陷外的K有所减弱。模拟的M-H回路很好地反映了实验的特点。一系列不同重复周期的[Co/Pt]n多层膜的回线也与实验符合得很好。此外,在此模拟中,观察到在磁化反转过程中的反转畴壁的移动。
Two micromagnetic models, Model A with the polycrystalline microstructure and Model B with just regular mesh, are set up to simulate the hysteresis loops of Co/Pt multilayers with perpendicular anisotropy. In both models, a defect region on a scale of 100 nm is introduced in any Co film with only two atomic layers, which plays a key role in this simulation. The magnetic anisotropy constant K of cells in the defect region is weakened compare to the K out of the defect. The simulated M-H loops express the characteristics of the experiments well. The loops of a series of [Co/Pt]n multilayers with different repetition period also agree with experiment well. Moreover, the movement of reversed domain wall during magnetization reversal is observed in this simulation.
DOI: 10.1016/0304-8853(88)90202-8
发表时间: 1988-10-01
影响因子: 2.7
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