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

doi:10.1063/1.5142562

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

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Abstract

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 language	English (US)
Pages (from-to)	142404
Journal	Applied Physics Letters
Volume	116
Issue number	14
DOIs	https://doi.org/10.1063/1.5142562
State	Published - Apr 9 2020

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https://repository.kaust.edu.sa/bitstream/10754/662493/1/APL19-AR-11115.pdf

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@article{5bcd430bb6c94e8eac065e41690da83d,

title = "Formation and magnetic-field stability of magnetic dipole skyrmions and bubbles in a ferrimagnet",

abstract = "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.",

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

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)",

year = "2020",

month = apr,

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doi = "10.1063/1.5142562",

language = "English (US)",

volume = "116",

pages = "142404",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Formation and magnetic-field stability of magnetic dipole skyrmions and bubbles in a ferrimagnet

AU - Zhang, Junwei

AU - Zhang, Xiaomin

AU - Chen, Huanjian

AU - Guang, Yao

AU - Zeng, Xue

AU - Yu, Guoqiang

AU - Zhang, Senfu

AU - Liu, Yizhou

AU - Feng, Jiafeng

AU - Zhao, Yuelei

AU - Zhou, Yan

AU - Qiu, Xuepeng

AU - Han, Xiufeng

AU - Peng, Yong

AU - Zhang, Xixiang

N1 - 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)

PY - 2020/4/9

Y1 - 2020/4/9

N2 - 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.

AB - 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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U2 - 10.1063/1.5142562

DO - 10.1063/1.5142562

M3 - Article

SN - 0003-6951

VL - 116

SP - 142404

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 14

ER -

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

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