Rai, Anish ; Dunz, Mareike ; Sapkota, Arjun ; Zilske, Philipp ; Mohammadi, Jamileh Beik ; Meinert, Markus ; Mewes, Claudia ; Mewes, Tim (2019)
Unidirectional and uniaxial anisotropies in the MnN/CoFeB exchange bias system.
In: Journal of Magnetism and Magnetic Materials, 485
doi: 10.1016/j.jmmm.2019.04.043
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We report on broadband and in-plane angle dependent ferromagnetic resonance measurements of MnN (30 nm)/CoFeB () exchange bias bilayer systems with CoFeB thicknesses ranging from 5 to 20 nm. We find that the strong unidirectional anisotropy in this system is accompanied by a strong uniaxial in-plane anisotropy and a small interfacial perpendicular anisotropy (). The strength of the interfacial exchange bias coupling in this system is only 2.5 times larger than the interfacial uniaxial coupling strength . The relaxation in this system also shows a strong unidirectional and uniaxial in-plane anisotropy. While the observed thickness dependence of the uniaxial anisotropy of the relaxation is consistent with an interfacial two-magnon scattering contribution, we find that this is not the case for the unidirectional relaxation.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2019 |
| Autor(en): | Rai, Anish ; Dunz, Mareike ; Sapkota, Arjun ; Zilske, Philipp ; Mohammadi, Jamileh Beik ; Meinert, Markus ; Mewes, Claudia ; Mewes, Tim |
| Art des Eintrags: | Bibliographie |
| Titel: | Unidirectional and uniaxial anisotropies in the MnN/CoFeB exchange bias system |
| Sprache: | Englisch |
| Publikationsjahr: | 1 September 2019 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Magnetism and Magnetic Materials |
| Jahrgang/Volume einer Zeitschrift: | 485 |
| DOI: | 10.1016/j.jmmm.2019.04.043 |
| Kurzbeschreibung (Abstract): | We report on broadband and in-plane angle dependent ferromagnetic resonance measurements of MnN (30 nm)/CoFeB () exchange bias bilayer systems with CoFeB thicknesses ranging from 5 to 20 nm. We find that the strong unidirectional anisotropy in this system is accompanied by a strong uniaxial in-plane anisotropy and a small interfacial perpendicular anisotropy (). The strength of the interfacial exchange bias coupling in this system is only 2.5 times larger than the interfacial uniaxial coupling strength . The relaxation in this system also shows a strong unidirectional and uniaxial in-plane anisotropy. While the observed thickness dependence of the uniaxial anisotropy of the relaxation is consistent with an interfacial two-magnon scattering contribution, we find that this is not the case for the unidirectional relaxation. |
| Fachbereich(e)/-gebiet(e): | 18 Fachbereich Elektrotechnik und Informationstechnik 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik (IMP) 18 Fachbereich Elektrotechnik und Informationstechnik > Institut für Mikrowellentechnik und Photonik (IMP) > Neue Materialien Elektronik |
| Hinterlegungsdatum: | 14 Jan 2022 10:34 |
| Letzte Änderung: | 14 Jan 2022 10:34 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum