Magnetomechanical Torques in Small Magnetic Cantilevers | Zendy

Alexey A. Kovalev | Zendy; G. Bauer | Zendy; Arne Brataas | Zendy

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Magnetomechanical Torques in Small Magnetic Cantilevers

Author(s) -

Alexey A. Kovalev,

G. Bauer,

Arne Brataas

Publication year - 2006

Publication title -

japanese journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.487

H-Index - 129

eISSN - 1347-4065

pISSN - 0021-4922

DOI - 10.1143/jjap.45.3878

Subject(s) - cantilever , ferromagnetic resonance , torque , ferromagnetism , magnetization , materials science , condensed matter physics , magneto , magnetic field , current (fluid) , magnet , nuclear magnetic resonance , physics , composite material , quantum mechanics , thermodynamics

We study the dnamics of small magnetic cantilevers, either made from Sicovered by a magnetic film or entirely ferromagnetic ones. Themagnetomechanical torques are found to cause line splittings in ferromagneticresonance spectra and magnetization reversal facilitated by mechanical degreesof freedom. We show that the magnetomechanical torques can extend the limits ofdetecting and exciting motion at the nanoscale. A "nanomotor" described hereeffectively transforms rf magnetic fields into mechanical oscillations. Wefurthermore propose to integrate mechanical oscillators into magnetoelectronicdevices that make use of current-induced spin-transfer torques. This opens newpossibilities for electric transducers of nanomechanical motion.Comment: 20 pages, 12 figures; submitted to a special issue of JJAP: Magnetization Dynamics in Spintronic Structures and Device

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