Tuning the Dzyaloshinskii-Moriya interaction in Pt/Co/MgO heterostructures through the MgO thickness
文献类型：期刊论文
| 作者 | Yan, Shaohua; Zhao, Weisheng; Yang, Hongxin; Cao, Anni; Zhang, Xueying; Koopmans, Bert; Peng, Shouzhong; Zhang, Yu; Wang, Zilu |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2018 |
| 卷号 | 10期号:25页码:12062-12067 |
| 关键词 | Real-space Observation Magnetic-anisotropy Skyrmion Vortices Driven Torque Creep Film |
| 英文摘要 | The interfacial Dzyaloshinskii-Moriya interaction (DMI) in ferromagnetic/heavy metal ultra-thin film structures has attracted a lot of attention thanks to its capability to stabilize Neel-type domain walls (DWs) and magnetic skyrmions for the realization of non-volatile memory and logic devices. In this study, we demonstrate that magnetic properties in perpendicularly magnetized Ta/Pt/Co/MgO/Pt heterostructures, such as magnetization and DMI, can be significantly influenced by the MgO thickness. To avoid the excessive oxidation of Co, an ultrathin Mg layer is inserted to improve the quality of the Co-MgO interface. By using field-driven domain wall expansion in the creep regime, we find that non-monotonic tendencies of the DMI field appear when changing the thickness of MgO. With the insertion of a monatomic Mg layer, the strength of the DMI could reach a high level and saturate. We conjecture that the efficient control of the DMI is a result of subtle changes of both Pt/Co and Co/MgO interfaces, which provides a method to optimize the design of ultra-thin structures achieving skyrmion electronics. |
| 学科主题 | Chemistry ; Energy & Fuels ; Materials Science ; Physics |
| 语种 | 英语 |
| 公开日期 | 2018-12-04 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/17326]  |
| 专题 | 2018专题 |
| 推荐引用方式 GB/T 7714 | Yan, Shaohua,Zhao, Weisheng,Yang, Hongxin,et al. Tuning the Dzyaloshinskii-Moriya interaction in Pt/Co/MgO heterostructures through the MgO thickness[J]. NANOSCALE,2018,10(25):12062-12067. |
| APA | Yan, Shaohua.,Zhao, Weisheng.,Yang, Hongxin.,Cao, Anni.,Zhang, Xueying.,...&Wang, Zilu.(2018).Tuning the Dzyaloshinskii-Moriya interaction in Pt/Co/MgO heterostructures through the MgO thickness.NANOSCALE,10(25),12062-12067. |
| MLA | Yan, Shaohua,et al."Tuning the Dzyaloshinskii-Moriya interaction in Pt/Co/MgO heterostructures through the MgO thickness".NANOSCALE 10.25(2018):12062-12067. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。