4.6 Article

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

Journal

PHYSICAL REVIEW B
Volume 78, Issue 1, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.78.012408

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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 similar to 58 degrees off plane for 100 nm-wide nanoelectrodes.

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