期刊
APPLIED PHYSICS LETTERS
卷 116, 期 14, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5142562
关键词
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资金
- King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR) [OSR-2017-CRG6-3427, OSR-2016-CRG5-2977]
- National Natural Science Foundation of China (NSFC) [11874409, 51801087, 11974260, 11674246]
- Beijing Natural Science Foundation [Z190009]
- International Partnership Program of the Chinese Academy of Sciences (CAS) [112111KYSB20170090]
- Shenzhen Peacock Group Plan [KQTD20180413181702403]
We study the magnetic domain pattern in a ferrimagnetic CoTb thin film using Lorentz transmission electron microscopy. The evolution of domain patterns is captured at different temperatures and external fields. Magnetic dipole skyrmions and bubbles can be created simultaneously by increasing the temperature of the sample and applying appropriate out-of-plane magnetic fields. By tuning the external magnetic fields, it is found that the skyrmions are annihilated at a higher magnetic field compared to bubbles. Moreover, we also find that the in-plane magnetic field influences the formation and the shape of skyrmions and bubbles. Further, micromagnetic simulations are also consistent with the experimental observations. Our findings provide insights into the magnetic field stability of skyrmions.
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