Fukami, S., Kuerbanjiang, B. orcid.org/0000-0001-6446-8209, Sato, H. et al. (3 more authors) (2017) Magnetic domain-wall creep driven by field and current in Ta/CoFeB/MgO. RSC Advances. 055918. pp. 1-8. ISSN 2046-2069
Abstract
Creep motion of magnetic domain wall (DW), thermally activated DW dynamics under subthreshold driving forces, is a paradigm to understand the interaction between driven interfaces and applied external forces. Previous investigation has shown that DW in a metallic system interacts differently with current and magnetic field, manifesting itself as different universality classes for the creep motion. In this article, we first review the experimental determination of the universality classes for current- and field-driven DW creeps in a Ta/CoFeB/MgO wire, and then elucidate the underlying factors governing the obtained results. We show that the nature of torque arising from current in association with DW configuration determines universality class for the current-induced creep in this system. We also discuss the correlation between the field-induced DW creep characteristics and structure observed by a transmission electron microscope. The observed results are expected to provide a deeper understanding for physics of DW motion in various magnetic materials.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 Author(s). |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 27 Feb 2017 11:40 |
Last Modified: | 26 Nov 2024 00:33 |
Published Version: | https://doi.org/10.1063/1.4974889 |
Status: | Published online |
Refereed: | Yes |
Identification Number: | 10.1063/1.4974889 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:112899 |