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arXiv · 0806.1744

Geometrical control of the magnetization direction in high aspect-ratio PdNi ferromagnetic nano-electrodes

J. J. Gonzalez-Pons·J. J. Henderson·E. del Barco·B. Ozyilmaz
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Abstract

We present a study of electron-beam evaporated Pd0.4Ni0.6 alloy thin films by means of ferromagnetic resonance measurements on extended films of varying thickness and anisotropic magnetoresistance measurements of lithographically patterned high aspect-ratio ferromagnetic electrodes, respectively. The results reveal that the direction of the magnetization strongly depends on the electrode lateral dimensions, transitioning from in-plane magnetization for extended films to out-of-the-plane magnetization for electrode widths below 2-3 microns, reaching 58 degrees off-plane for 100 nm-wide nanoelectrodes.

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J. J. Gonzalez-Pons, J. J. Henderson, E. del Barco, B. Ozyilmaz. 2008-06-10. Geometrical control of the magnetization direction in high aspect-ratio PdNi ferromagnetic nano-electrodes. https://doi.org/10.1103/physrevb.78.012408

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