Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/141985
Title: Tilted magnetisation for domain wall pinning in racetrack memory
Authors: Jin, Tianli
Tan, Funan
Ang, Calvin Ching Ian
Gan, Weiliang
Cao, Jiangwei
Lew, Wen Siang
Piramanayagam, S. N.
Keywords: Science::Physics::Electricity and magnetism
Issue Date: 2019
Source: 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
Journal: Journal of Magnetism and Magnetic Materials
Abstract: 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.
URI: https://hdl.handle.net/10356/141985
ISSN: 0304-8853
DOI: 10.1016/j.jmmm.2019.165410
Rights: © 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.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

Files in This Item:
File Description SizeFormat 
Tilted magnetisation for domain wall pinning in racetrack memory .pdf1.73 MBAdobe PDFView/Open

Page view(s) 50

20
checked on Oct 23, 2020

Download(s) 50

1
checked on Oct 23, 2020

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.