Autoren:	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
Titel:	Enhancing domain wall velocity through interface intermixing in W-CoFeB-MgO films with perpendicular anisotropy
Online-Publikationsdatum:	6-Nov-2019
Erscheinungsdatum:	2019
Sprache des Dokuments:	Englisch
Zusammenfassung/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-Sachgruppe:	530 Physik 530 Physics
Veröffentlichende Institution:	Johannes Gutenberg-Universität Mainz
Organisationseinheit:	FB 08 Physik, Mathematik u. Informatik
Veröffentlichungsort:	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
Publikationstyp:	Zeitschriftenaufsatz
Nutzungsrechte:	Urheberrechtsschutz
Informationen zu den Nutzungsrechten:	https://rightsstatements.org/vocab/InC/1.0/
Zeitschrift:	Applied physics letters 115 12
Seitenzahl oder Artikelnummer:	Art. 122404
Verlag:	American Inst. of Physics
Verlagsort:	Melville, NY
Erscheinungsdatum:	2019
ISSN:	1077-3118 0003-6951
URL der Originalveröffentlichung:	http://dx.doi.org/10.1063/1.5121357
DOI der Originalveröffentlichung:	10.1063/1.5121357
Enthalten in den Sammlungen:	JGU-Publikationen