Tilted magnetisation for domain wall pinning in racetrack memory
The interest in spintronics devices based on domain wall (DW) motion has gained attention for many years. However, the stochastic behaviour of DW motion is still a fundamental issue for the practical implementation of DW devices. In this study, we demonstrate that effective domain wall pinning can b...
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sg-ntu-dr.10356-1419852023-02-28T19:25:17Z Tilted magnetisation for domain wall pinning in racetrack memory Jin, Tianli Tan, Funan Ang, Calvin Ching Ian Gan, Weiliang Cao, Jiangwei Lew, Wen Siang Piramanayagam, S. N. School of Physical and Mathematical Sciences Science::Physics::Electricity and magnetism Domain Wall Memory Domain Wall Pinning The interest in spintronics devices based on domain wall (DW) motion has gained attention for many years. However, the stochastic behaviour of DW motion is still a fundamental issue for the practical implementation of DW devices. In this study, we demonstrate that effective domain wall pinning can be achieved by using exchange interaction between Co/Ni multilayer with perpendicular magnetic anisotropy (PMA) and Co layer with in-plane magnetic anisotropy (IMA) to create locally tilted magnetisation. The strength of exchange interaction is tuned by varying the thickness of spacer layer Pt between the PMA and IMA layers, thus forming different tilt angles. Micromagnetic simulations were performed to verify the relation between pinning field and magnetisation tilt angle. Polar Kerr microscopy shows the current-driven DW pinning and depinning in the Co/Ni multilayer device with Co crossbars, where the thickness of spacer layer Pt is 1 nm. The proposed approach can potentially be used in future DW memory device applications. Accepted version 2020-06-12T12:52:00Z 2020-06-12T12:52:00Z 2019 Journal Article Jin, T., Tan, F., Ang, C. C. I., Gan, W., Cao, J., Lew, W. S., & Piramanayagam, S. N. (2019). Tilted magnetisation for domain wall pinning in racetrack memory. Journal of Magnetism and Magnetic Materials, 489, 165410-. doi:10.1016/j.jmmm.2019.165410 0304-8853 https://hdl.handle.net/10356/141985 10.1016/j.jmmm.2019.165410 489 en Journal of Magnetism and Magnetic Materials © 2019 Elsevier B.V. All rights reserved. This paper was published in Journal of Magnetism and Magnetic Materials and is made available with permission of Elsevier B.V. application/pdf |
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Science::Physics::Electricity and magnetism Domain Wall Memory Domain Wall Pinning Jin, Tianli Tan, Funan Ang, Calvin Ching Ian Gan, Weiliang Cao, Jiangwei Lew, Wen Siang Piramanayagam, S. N. Tilted magnetisation for domain wall pinning in racetrack memory |
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The interest in spintronics devices based on domain wall (DW) motion has gained attention for many years. However, the stochastic behaviour of DW motion is still a fundamental issue for the practical implementation of DW devices. In this study, we demonstrate that effective domain wall pinning can be achieved by using exchange interaction between Co/Ni multilayer with perpendicular magnetic anisotropy (PMA) and Co layer with in-plane magnetic anisotropy (IMA) to create locally tilted magnetisation. The strength of exchange interaction is tuned by varying the thickness of spacer layer Pt between the PMA and IMA layers, thus forming different tilt angles. Micromagnetic simulations were performed to verify the relation between pinning field and magnetisation tilt angle. Polar Kerr microscopy shows the current-driven DW pinning and depinning in the Co/Ni multilayer device with Co crossbars, where the thickness of spacer layer Pt is 1 nm. The proposed approach can potentially be used in future DW memory device applications. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Jin, Tianli Tan, Funan Ang, Calvin Ching Ian Gan, Weiliang Cao, Jiangwei Lew, Wen Siang Piramanayagam, S. N. |
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Article |
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Jin, Tianli Tan, Funan Ang, Calvin Ching Ian Gan, Weiliang Cao, Jiangwei Lew, Wen Siang Piramanayagam, S. N. |
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Jin, Tianli |
title |
Tilted magnetisation for domain wall pinning in racetrack memory |
title_short |
Tilted magnetisation for domain wall pinning in racetrack memory |
title_full |
Tilted magnetisation for domain wall pinning in racetrack memory |
title_fullStr |
Tilted magnetisation for domain wall pinning in racetrack memory |
title_full_unstemmed |
Tilted magnetisation for domain wall pinning in racetrack memory |
title_sort |
tilted magnetisation for domain wall pinning in racetrack memory |
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2020 |
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https://hdl.handle.net/10356/141985 |
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1759857837638418432 |