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Probing the energy barriers and magnetization reversal processes of nanoperforated membrane based percolated media

Abstract : Magnetization reversal processes in Co/Pt multilayers prepared on nanoperforated templates are probed by magnetization relaxation measurements. The signature of pinning controlled domain wall movement as expected for percolated media is identified. This contrasts with the nucleation-type reversal mechanism of a Co/Pt reference film prepared on a smooth substrate. A zero field energy barrier of 93k(B)T is determined by fluctuation field measurements and is elucidated by micromagnetic calculations using the nudged elastic band method. This value is sufficiently large to qualify the material as a promising percolated medium.
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https://hal.archives-ouvertes.fr/hal-01289761
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Submitted on : Thursday, March 17, 2016 - 11:42:43 AM
Last modification on : Thursday, December 9, 2021 - 10:58:12 AM

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V. Neu, C. Schulze, M. Faustini, J. Lee, D. Makarov, et al.. Probing the energy barriers and magnetization reversal processes of nanoperforated membrane based percolated media. Nanotechnology, Institute of Physics, 2013, 24 (14), pp.145702. ⟨10.1088/0957-4484/24/14/145702⟩. ⟨hal-01289761⟩

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