Huge domain-wall speed variation with respect to ferromagnetic layer thickness in ferromagnetic Pt/Co/TiO2/Pt films
Huge domain-wall speed variation with respect to ferromagnetic layer thickness in ferromagnetic Pt/Co/TiO2/Pt films
复制标题
铁磁 Pt/Co/TiO2/Pt 薄膜中铁磁层厚度的巨大畴壁速度变化
DOI：
10.1063/1.5009726
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发表时间：
2018
影响因子：
4
通讯作者：
S. Choe
中科院分区：
文献类型：
--
作者：
Dae;Min;Yong;Ji;Joo;Duck;B. Min;S. Choe
在这项研究中，我们调查的铁磁层的厚度对磁化过程的影响。一系列的Pt/Co/TiO 2/Pt薄膜在相同的磁场作用下，畴壁速度变化超过100，000倍，这取决于铁磁层厚度。从蠕变-标度分析，这种显着的变化被发现是主要归因于根据蠕变-标度常数和铁磁层厚度之间的线性比例的蠕变-标度理论的蠕变-标度常数的厚度依赖性。因此，较薄的膜显示较快的DW速度。DW粗糙度也表现出敏感的铁磁层厚度的依赖性：较薄的膜显示更平滑的DW。本文的研究结果为提高DW基器件的性能提供了铁磁层厚度的优化设计准则。
In this study, we investigate the influence of the ferromagnetic layer thickness on the magnetization process. A series of ultrathin Pt/Co/TiO2/Pt films exhibits domain-wall (DW) speed variation of over 100,000 times even under the same magnetic field, depending on the ferromagnetic layer thickness. From the creep-scaling analysis, such significant variation is found to be mainly attributable to the thickness-dependence of the creep-scaling constant in accordance with the creep-scaling theory of the linear proportionality between the creep-scaling constant and the ferromagnetic layer thickness. Therefore, a thinner film shows a faster DW speed. The DW roughness also exhibits sensitive dependence on the ferromagnetic layer thickness: a thinner film shows smoother DW. The present observation provided a guide for an optimal design rule of the ferromagnetic layer thickness for better performance of DW-based devices.
影响因子：
38.3
作者：
Yang, See-Hun;Ryu, Kwang-Su;Parkin, Stuart
通讯作者：
Parkin, Stuart