Voltage-assisted Magnetization Switching in Ultrathin Fe80Co20 Alloy Layers

Details Voltage-assisted Magnetization Switching in Ultrathin Fe80Co20 Alloy Layers Voltage-assisted Magnetization Switching in Ultrathin Fe80Co20 Alloy Layers

2009-05-02

arxiv.org/abs/0905.0185v1

Physics

Condensed Matter

Materials Science

Scientific paper

Growing demands for the voltage-driven spintronic applications with ultralow-power consumption have led to new interest in exploring the voltage-induced magnetization switching in ferromagnetic metals. In this study, we observed a large perpendicular magnetic anisotropy change in Au(001) / ultrathin Fe80Co20(001) / MgO(001) / Polyimide / ITO junctions, and succeeded in realizing a clear switching of magnetic easy axis between in-plane and perpendicular directions. Furthermore, employing a perpendicularly magnetized film, voltage-induced magnetization switching in the perpendicular direction under the assistance of magnetic fields was demonstrated. These pioneering results may open a new window of electric-field controlled spintronics devices.

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