Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-465
Authors: | Zhao, Xiaoxuan Zhang, Boyu Vernier, Nicolas Zhang, Xueying Sall, Mamour Xing, Tao Herrera Diez, Liza Hepburn, Carolyna Wang, Lin Durin, Gianfranco Casiraghi, Arianna Belmeguenai, Mohamed Roussigné, Yves Stashkevich, Andrei Chérif, Salim Mourad Langer, Jürgen Ocker, Berthold Jaiswal, Samridh Jakob, Gerhard Kläui, Mathias Zhao, Weisheng Ravelosona, Dafiné |
Title: | Enhancing domain wall velocity through interface intermixing in W-CoFeB-MgO films with perpendicular anisotropy |
Online publication date: | 6-Nov-2019 |
Year of first publication: | 2019 |
Language: | english |
Abstract: | We study the influence of He irradiation induced interface intermixing on magnetic domain wall (dw) dynamics in w-cofeb (0.6 nm)-mgo ultrathin films, which exhibit high perpendicular magnetic anisotropy and large dzyaloshinskii-moriya interaction (dmi) values. whereas the pristine films exhibit strong dw pinning, we observe a large increase in the dw velocity in the creep regime upon he irradiation, which is attributed to the reduction of pinning centers induced by interface intermixing. asymmetric in-plane field-driven domain expansion experiments show that the dmi value is slightly reduced upon irradiation, and a direct relationship between dmi and interface anisotropy is demonstrated. our findings provide insights into the material design and interface control for dw dynamics, as well as for dmi, enabling the development of high-performance spintronic devices based on ultrathin magnetic layers. |
DDC: | 530 Physik 530 Physics |
Institution: | Johannes Gutenberg-Universität Mainz |
Department: | FB 08 Physik, Mathematik u. Informatik |
Place: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-465 |
URN: | urn:nbn:de:hebis:77-publ-593969 |
Version: | Accepted version |
Publication type: | Zeitschriftenaufsatz |
License: | In Copyright |
Information on rights of use: | https://rightsstatements.org/vocab/InC/1.0/ |
Journal: | Applied physics letters 115 12 |
Pages or article number: | Art. 122404 |
Publisher: | American Inst. of Physics |
Publisher place: | Melville, NY |
Issue date: | 2019 |
ISSN: | 1077-3118 0003-6951 |
Publisher URL: | http://dx.doi.org/10.1063/1.5121357 |
Publisher DOI: | 10.1063/1.5121357 |
Appears in collections: | JGU-Publikationen |