Strain-controlled domain wall injection into nanowires for sensor applications
- Publication type:
- Journal article
- Metadata:
-
- Autoren
- Giovanni Masciocchi
- Mouad Fattouhi
- Andreas Kehlberger
- Luis Lopez-Diaz
- Maria-Andromachi Syskaki
- Mathias Klaeui
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000721340300010&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1063/5.0069661
- eISSN
- 1089-7550
- Externe Identifier
- Clarivate Analytics Document Solution ID: XB4ZX
- ISSN
- 0021-8979
- Ausgabe der Veröffentlichung
- 18
- Zeitschrift
- JOURNAL OF APPLIED PHYSICS
- Artikelnummer
- ARTN 183903
- Datum der Veröffentlichung
- 2021
- Status
- Published
- Titel
- Strain-controlled domain wall injection into nanowires for sensor applications
- Sub types
- Article
- Ausgabe der Zeitschrift
- 130
Data source: Web of Science (Lite)
- Other metadata sources:
-
- Abstract
- <jats:p>We investigate experimentally the effects of strain on the injection of 180° domain walls (DWs) from a nucleation pad into magnetic nanowires, as typically used for DW-based sensors. In our study, the strain, generated by substrate bending, induces in the material a uniaxial anisotropy due to magnetoelastic coupling. To compare the strain effects, Co40Fe40B20, Ni, and Ni82Fe18 samples with in-plane magnetization and different magnetoelastic coupling are deposited. In these samples, we measure the magnetic field required for the injection of a DW, by imaging using differential contrast in a magneto-optical Kerr microscope. We find that strain increases the DW injection field and that the switching mechanism depends strongly on the strain direction. We observe that low magnetic anisotropy facilitates the creation of a domain wall at the junction between the pad and the wire, whereas a strain-induced magnetic easy axis significantly increases the coercive field of the nucleation pad. Moreover, we find that these effects of strain-induced anisotropy can be counteracted by an additional magnetic uniaxial anisotropy perpendicular to the strain-induced easy axis. We perform micromagnetic simulations to support the interpretation of our experimental findings showing that the above described observations can be explained by the effective anisotropy in the device. The anisotropy influences the switching mechanism in the nucleation pad as well as the pinning of the DW at the wire entrance. As the DW injection is a key operation for sensor performances, the observations show that strain is imposing a lower limit for the sensor field operating window.</jats:p>
- Autoren
- Giovanni Masciocchi
- Mouad Fattouhi
- Andreas Kehlberger
- Luis Lopez-Diaz
- Maria-Andromachi Syskaki
- Mathias Kläui
- DOI
- 10.1063/5.0069661
- eISSN
- 1089-7550
- ISSN
- 0021-8979
- Ausgabe der Veröffentlichung
- 18
- Zeitschrift
- Journal of Applied Physics
- Sprache
- en
- Online publication date
- 2021
- Datum der Veröffentlichung
- 2021
- Status
- Published
- Herausgeber
- AIP Publishing
- Herausgeber URL
- http://dx.doi.org/10.1063/5.0069661
- Datum der Datenerfassung
- 2023
- Titel
- Strain-controlled domain wall injection into nanowires for sensor applications
- Ausgabe der Zeitschrift
- 130
Data source: Crossref
- Author's licence
- InCopyright
- Autoren
- Giovanni Masciocchi
- Mouad Fattouhi
- Andreas Kehlberger
- Luis Lopez-Diaz
- Maria-Andromachi Syskaki
- Mathias Kläui
- Hosting institution
- Universitätsbibliothek Mainz
- Sammlungen
- JGU-Publikationen
- Resource version
- Accepted version
- DOI
- 10.1063/5.0069661
- File(s) embargoed
- false
- Open access
- true
- ISSN
- 0021-8979
- Zeitschrift
- Journal of applied physics
- Schlüsselwörter
- 530 Physik
- 530 Physics
- Sprache
- eng
- Open access status
- Open Access
- Paginierung
- 183903
- Datum der Veröffentlichung
- 2021
- Public URL
- https://openscience.ub.uni-mainz.de/handle/20.500.12030/6747
- Herausgeber
- American Inst. of Physics
- Herausgeber URL
- https://doi.org/10.1063/5.0069661
- Datum der Datenerfassung
- 2022
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2022
- Zugang
- Public
- Titel
- Strain-controlled domain wall injection into nanowires for sensor applications
- Ausgabe der Zeitschrift
- 130
Files
straincontrolled_domain_wall_-20220131122906627.pdf
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