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Magnetic resonance studies of the fundamental spin-wave modes in individual submicron Cu/NiFe/Cu perpendicularly magnetized disks

G. De Loubens·V. V. Naletov·Olivier Klein·J. Ben Youssef·F. Boust·N. Vukadinovic
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Abstract

Spin wave spectra of perpendicularly magnetized disks with trilayers consisting of a 100 nm permalloy (Py) layer sandwiched by two Cu layers of 30 nm, are measured individually with a Magnetic Resonance Force Microscope (MRFM). It is demonstrated by 3D micromagnetic simulations that in disks having sub-micron size diameters, the lowest energy spin wave mode of the saturated state is not spatially uniform but rather is localized at the center of the Py/Cu interface in the region of a minimum demagnetizing field.

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G. De Loubens, V. V. Naletov, Olivier Klein, J. Ben Youssef, F. Boust, N. Vukadinovic. 2007-01-23. Magnetic resonance studies of the fundamental spin-wave modes in individual submicron Cu/NiFe/Cu perpendicularly magnetized disks. https://doi.org/10.1103/physrevlett.98.127601

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