Layer-Selective Switching of a Double-Layer Perpendicular Magnetic Nanodot Using Microwave Assistance

City planners know how to stretch real estate: build upward. The same idea may be used to densify memory or other components on a chip. The authors demonstrate layer-selective microwave-assisted switching in a magnetic nanodot, exploiting the different ferromagnetic resonance frequencies of its two layers. This method presents a writing process for next-generation magnetic recording in three-dimensional media.

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