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

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

2008-06-10

arxiv.org/abs/0806.1744v1

Physics

Condensed Matter

Strongly Correlated Electrons

Preprint submitted to PRB (14 pages, 4 figures)

Scientific paper

10.1103/PhysRevB.78.012408

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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