| Autor: |
Sheng Jiang, Sunjae Chung, Liza Herrera Diez, Tuan Quang Le, Fredrik Magnusson, Dafiné Ravelosona, Johan Åkerman |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
AIP Advances, Vol 8, Iss 6, Pp 065309-065309-7 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2158-3226 |
| DOI: |
10.1063/1.5024472 |
| Popis: |
Using He+ ion irradiation, we demonstrate how the magnetodynamic properties of both ferromagnetic layers in all-perpendicular [Co/Pd]/Cu/[Co/Ni] spin valves can be tuned by varying the He+ ion fluence. As the perpendicular magnetic anisotropy of both layers is gradually reduced by the irradiation, different magnetic configurations can be achieved from all-perpendicular (↑↑), through orthogonal (→↑), to all in-plane (⇉). In addition, both the magnetic damping (α) and the inhomogeneous broadening (ΔH0) of the Co/Ni layer improve substantially with increasing fluence. While the GMR of the spin valve is negatively affected, decreasing linearly from an original value of 1.14% to 0.4% at the maximum fluence of 50×1014 He+/cm2, most of the Co/Ni layer improvement is achieved already at a fluence of 10×1014 He+/cm2, for which GMR only reduces to 0.9%. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
