Room-temperature creation and manipulation of skyrmions in MgO/FeNiB/Mo multilayers

• Published in: Chinese physics B Vol. 32; no. 12; pp. 127504 - 632
• Main Authors: Liang, Wen-Hui, Su, Jian, Wang, Yu-Tong, Zhang, Ying, Hu, Feng-Xia, Cai, Jian-Wang
• Format: Journal Article
• Language: English
• Published: Chinese Physical Society and IOP Publishing Ltd 01.12.2023
• Subjects: electromagnetic coordinated manipulation; Lorentz transmission electron microscopy (LTEM); magnetic skyrmion; MgO/FeNiB/Mo multilayers; MgO/FeNiB/Mo multilayers; Lorentz transmission electron microscopy(LTEM); magnetic skyrmion; electromagnetic coordinated manipulation
• ISSN: 1674-1056; 2058-3834
• DOI: 10.1088/1674-1056/acf5d4

Magnetic skyrmions in multilayer structures are considered as a new direction for the next generation of storage due to their small size, strong anti-interference ability, high current-driven mobility, and compatibility with existing spintronic technology. In this work, we present a tunable room temperature skyrmion platform based on multilayer stacks of MgO/FeNiB/Mo. We systematically studied the creation of magnetic skyrmions in MgO/FeNiB/Mo multilayer structures with perpendicular magnetic anisotropy (PMA). In these structures, the magnetic anisotropy changes from PMA to in-plane magnetic anisotropy (IMA) as the thickness of FeNiB layer increases. By adjusting the applied magnetic field and electric current, stable and high-density skyrmions can be obtained in the material system. The discovery of this material broadens the exploration of new materials for skyrmion and promotes the development of spintronic devices based on skyrmions.