Formation and magnetic-field stability of magnetic dipole skyrmions and bubbles in a ferrimagnet

Junwei Zhang, Xiaomin Zhang, Huanjian Chen, Yao Guang, Xue Zeng, Guoqiang Yu, Senfu Zhang, Yizhou Liu, Jiafeng Feng, Yuelei Zhao, Yan Zhou, Xuepeng Qiu, Xiufeng Han, Yong Peng, Xixiang Zhang

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


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.
Original languageEnglish (US)
Pages (from-to)142404
JournalApplied Physics Letters
Issue number14
StatePublished - Apr 9 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): OSR-2016-CRG5-2977, OSR-2017-CRG6-3427
Acknowledgements: This work is financially supported by the King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR) under the Award No. OSR-2017-CRG6-3427 and No. OSR-2016-CRG5-2977. G.Y. thank the financial support by the National Natural Science Foundation of China [NSFC, Grants No.11874409, No. 51801087, No. 11974260 and No. 11674246] and the Beijing
Natural Science Foundation (Grant No. Z190009). Y.L.Z. and Y.Z. thank the financial support by Shenzhen Peacock Group Plan (Grant No. KQTD20180413181702403)


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