Mechanical rotation of nanomagnet through interaction with an electromagnetic wave
نویسندگان
چکیده
We report a theoretical study on the effect of mechanical rotation of nanomagnet about a fixed axis due to its interaction with an electromagnetic wave with a frequency approaching that of ferromagnetic resonance. A stationary mode of rotation is investigated. We show that the rotation speed magnitude is proportional to the squared amplitude of the wave’s magnetic field, being maximum for a circularly polarized wave when the rotation direction changes for the opposite following a likewise change in the direction of polarization. The role of the magnetic anisotropy of nanomagnet is discussed. The effect is numerically estimated for molecular nanomagnet Fe8.
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تاریخ انتشار 2015