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Chin. Phys. B, 2022, Vol. 31(6): 067502    DOI: 10.1088/1674-1056/ac65f5

Non-volatile multi-state magnetic domain transformation in a Hall balance

Yang Gao(高阳)1,2, Jingyan Zhang(张静言)3,†, Pengwei Dou(窦鹏伟)3, Zhuolin Li(李卓霖)2, Zhaozhao Zhu(朱照照)2,4, Yaqin Guo(郭雅琴)1, Chaoqun Hu(胡超群)1, Weidu Qin(覃维都)1, Congli He(何聪丽)1, Shipeng Shen(申世鹏)1, Ying Zhang(张颖)2,4,‡, and Shouguo Wang(王守国)1,§
1 Institute of Advanced Materials, Beijing Normal University, Beijing 100875, China;
2 Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
3 School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
4 Songshan Lake Materials Laboratory, Dongguan 523808, China
Abstract  High performance of the generation, stabilization and manipulation of magnetic skyrmions prompts the application of topological multilayers in spintronic devices. Skyrmions in synthetic antiferromagnets (SAF) have been considered as a promising alternative to overcome the limitations of ferromagnetic skyrmions, such as the skyrmion Hall effect and stray magnetic field. Here, by using the Lorentz transmission electron microscopy, the interconversion between the single domain, labyrinth domain and skyrmion state can be observed by the combined manipulation of electric current and magnetic field in a Hall balance (a SAF with the core structure of [Co/Pt]4/NiO/[Co/Pt]4 showing perpendicular magnetic anisotropy). Furthermore, high-density room temperature skyrmions can be stabilized at zero field while the external stimulus is removed and the skyrmion density is tunable. The generation and manipulation method of skyrmions in Hall balance in this study opens up a promising way to engineer SAF-skyrmion-based memory devices.
Keywords:  magnetic skyrmion      Hall balance      electromagnetic coordinated manipulation      Lorentz transmission electron microscopy (LTEM)  
Received:  28 March 2022      Revised:  03 April 2022      Accepted manuscript online:  11 April 2022
PACS:  75.60.Ch (Domain walls and domain structure)  
  75.50.Ee (Antiferromagnetics)  
  75.70.Cn (Magnetic properties of interfaces (multilayers, superlattices, heterostructures))  
  68.37.Lp (Transmission electron microscopy (TEM))  
Fund: This work was supported by the Science Center of the National Science Foundation of China (Grant No. 52088101), the National Natural Science Foundation of China (Grant Nos. 11874408, 52130103, 51901025, and 11904025), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB33030100), and the Youth Innovation Promotion Association of Chinese Academy of Sciences (Grant No. CAS Y201903).
Corresponding Authors:  Jingyan Zhang, Ying Zhang, Shouguo Wang     E-mail:;;

Cite this article: 

Yang Gao(高阳), Jingyan Zhang(张静言), Pengwei Dou(窦鹏伟), Zhuolin Li(李卓霖), Zhaozhao Zhu(朱照照), Yaqin Guo(郭雅琴), Chaoqun Hu(胡超群), Weidu Qin(覃维都), Congli He(何聪丽), Shipeng Shen(申世鹏), Ying Zhang(张颖), and Shouguo Wang(王守国) Non-volatile multi-state magnetic domain transformation in a Hall balance 2022 Chin. Phys. B 31 067502

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