Regensburg 2025 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 31: Poster II
MA 31.42: Poster
Mittwoch, 19. März 2025, 17:00–19:30, P1
Interlayer coupling in Co/Pd multilayers with perpendicular magnetic anisotropy — •Raphael Kohlstedt1,2, Rico Ehler1,2, Peter Heinig1,2, and Olav Hellwig1,2,3 — 1Chemnitz University of Technology, D-09107 Chemnitz, Germany — 2Research Center MAIN, D-09126 Chemnitz, Germany — 3Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, D-01328 Dresden, Germany
Antiferromagnetically (AF) coupled perpendicular magnetic anisotropy (PMA) multilayers (MLs) are widely utilized in magnetic devices. In Co/Pd MLs with PMA, the coupling is implemented via non-magnetic spacer layers like Ru or Ir. Using Pd itself as a spacer would be beneficial, since purely-Pd-based systems are promising candidates for applications in magneto-ionics, as demonstrated in recent reports [1-3]. In sputtered Co/Pd/Co trilayers, aging under ambient conditions induces a transient coupling effect, leading to a transition from ferromagnetic to antiferromagnetic coupling [4]. Building onto these experiments, we investigate the coupling behavior in Co/Pd/Co trilayers and Co/Pd MLs separated by a thicker Pd spacer. In our samples, we observe AF coupling as well as distinctly time-dependent effects, differing from those reported previously.
[1] A. E. Kossak et al., Sci. Adv., 9(1), 2023
[2] A. E. Kossak et al., Adv. Funct. Mater., 34(46), 2024
[3] M. Gößler et al., Adv. Funct. Mater., 34(40), 2024
[4] F. S. Wen et al., J. Appl. Phys., 110(4), 2011
Keywords: perpendicular magnetic anisotropy; magnetic multilayers; interlayer coupling; antiferromagnetic coupling; magneto-ionics