METRICA, l’archivio istituzionale della produzione scientifica dell’Istituto Nazionale di Ricerca Metrologica, ha lo scopo di raccogliere, documentare, conservare e pubblicare, anche ad accesso aperto, i prodotti della ricerca dell’Ente. METRICA utilizza la piattaforma IRIS (Institutional Research Information System) sviluppata da Cineca.
EnglishWe 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.
Enhancing domain wall velocity through interface intermixing in W-CoFeB-MgO films with perpendicular anisotropy / Zhao, Xiaoxuan; Zhang, Boyu; Vernier, Nicolas; Zhang, Xueying; Sall, Mamour; Xing, Tao; Diez, Liza Herrera; 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. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 115:12(2019), p. 122404. [10.1063/1.5121357]
| Titolo: | Enhancing domain wall velocity through interface intermixing in W-CoFeB-MgO films with perpendicular anisotropy | |
| Autori: | ||
| Data di pubblicazione: | 2019 | |
| Rivista: | APPLIED PHYSICS LETTERS | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1063/1.5121357 | |
| 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. | |
| Full-text (pubblici): | open | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| ZHA-19.pdf | Versione editoriale | Non Pubblico - Accesso privato/ristretto | Visibile a tuttiVisualizza/Apri |
http://hdl.handle.net/11696/61425
Copyright © 2021