Magnetic chiral skyrmion bubbles and achiral bubbles are two independent magnetic domain structures, in which the former with an equivalent winding number to skyrmions offer great promise as information carriers for further spintronic devices. Here, in this work, we experimentally investigate the generation and annihilation of magnetic chiral skyrmion bubbles and achiral bubbles in the Mn–Ni–Ga thin plate by using Lorentz transmission electron microscopy (L-TEM). The two independent magnetic domain structures can be directly controlled after field cooling manipulation by varying the titled angles of external magnetic fields. By imaging the magnetization reversal with increasing temperature, we found an extraordinary annihilation mode of magnetic chiral skyrmion bubbles and a non-linear frequency for the winding number reversal. The quantitative analysis of such dynamics was performed by using L-TEM to directly determine the barrier energy for the magnetization reversal of magnetic chiral skyrmion bubbles.
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Thermally induced generation and annihilation of magnetic chiral skyrmion bubbles and achiral bubbles in Mn–Ni–Ga magnets
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30 March 2020
Research Article|
March 30 2020
Thermally induced generation and annihilation of magnetic chiral skyrmion bubbles and achiral bubbles in Mn–Ni–Ga magnets
Bei Ding;
Bei Ding
1
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
, Beijing 100190, China
2
Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST)
, Thuwal 23955-6900, Saudi Arabia
3
University of Chinese Academy of Sciences
, Beijing 100049, China
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Junwei Zhang
;
Junwei Zhang
2
Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST)
, Thuwal 23955-6900, Saudi Arabia
4
Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University
, Lanzhou 730000, People's Republic of China
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Hang Li
;
Hang Li
1
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
, Beijing 100190, China
3
University of Chinese Academy of Sciences
, Beijing 100049, China
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Senfu Zhang
;
Senfu Zhang
2
Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST)
, Thuwal 23955-6900, Saudi Arabia
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Enke Liu
;
Enke Liu
1
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
, Beijing 100190, China
5
Songshan Lake Materials Laboratory
, Dongguan, Guangdong 523808, China
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Guangheng Wu;
Guangheng Wu
1
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
, Beijing 100190, China
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Xixiang Zhang
;
Xixiang Zhang
a)
2
Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST)
, Thuwal 23955-6900, Saudi Arabia
a)Authors to whom correspondence should be addressed: xixiang.zhang@kaust.edu.sa and wenhong.wang@iphy.ac.cn
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Wenhong Wang
Wenhong Wang
a)
1
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
, Beijing 100190, China
5
Songshan Lake Materials Laboratory
, Dongguan, Guangdong 523808, China
a)Authors to whom correspondence should be addressed: xixiang.zhang@kaust.edu.sa and wenhong.wang@iphy.ac.cn
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a)Authors to whom correspondence should be addressed: xixiang.zhang@kaust.edu.sa and wenhong.wang@iphy.ac.cn
Appl. Phys. Lett. 116, 132402 (2020)
Article history
Received:
December 11 2019
Accepted:
February 19 2020
Citation
Bei Ding, Junwei Zhang, Hang Li, Senfu Zhang, Enke Liu, Guangheng Wu, Xixiang Zhang, Wenhong Wang; Thermally induced generation and annihilation of magnetic chiral skyrmion bubbles and achiral bubbles in Mn–Ni–Ga magnets. Appl. Phys. Lett. 30 March 2020; 116 (13): 132402. https://doi.org/10.1063/1.5142083
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