Crossover in the surface anisotropy contributions of ferromagnetic films on rippled Si surfaces
Crossover in the surface anisotropy contributions of ferromagnetic films on rippled Si surfaces
Liedke, M. O.; Körner, M.; Lenz, K.; Fritzsche, M.; Ranjan, M.; Keller, A.; Cizmár, E.; Zvyagin, S.; Facsko, S.; Potzger, K.; Lindner, J.; Fassbender, J.
We investigate the influence of a nanoscale periodic ripple morphology on the structure and magneto-crystalline anisotropy of thin ferromagnetic (FM) NiFe, Co, and Fe films. The ripples are created by ion beam erosion of the Si substrate. The periodic ripple structures induce a uniaxial magnetic anisotropy (UMA) in the FM films as confirmed by ferromagnetic resonance and magnetooptical Kerr effect measurements. The thickness dependence of the UMA reveals an abrupt transition. For a thin film regime there is a corrugated alignment of the magnetic moments and above a critical thickness one has dipolar interactions due to the sinusoidal surface modulations.
Keywords: ripples; magnetic anisotropy; uniaxial anisotropy; NiFe; Co; Fe; polycrystalline films; thin films; ion irradiation; MOKE; FMR; LLG
Involved research facilities
- High Magnetic Field Laboratory (HLD)
- Ion Beam Center DOI: 10.17815/jlsrf-3-159
- P-ELBE
Related publications
- DOI: 10.17815/jlsrf-3-159 is cited by this (Id 17353) publication
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Physical Review B 87(2013), 024424
DOI: 10.1103/PhysRevB.87.024424
Cited 59 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-17353