Magnetomechanical torques in small magnetic cantilevers

Alexey A. Kovalev, Gerrit E.W. Bauer, Arne Brataas

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We study the dynamics of small magnetic cantilevers, made from either Si covered by a magnetic film or entirely ferromagnetic materials. The magnetomechanical torques cause line splittings in ferromagnetic resonance spectra and magnetization reversal facilitated by mechanical degrees of freedom. We show that the magnetomechanical torques can extend the limits of detecting and exciting motion at the nanoscale. The "nanomotor" described here effectively transforms rf magnetic fields into mechanical oscillations. We furthermore propose to integrate mechanical oscillators into magneto-electronic devices that make use of current-induced spin-transfer torques. This opens new possibilities for electric transducers of nanomechanical motion.

Original languageEnglish
Pages (from-to)3878-3888
Number of pages11
JournalJapanese Journal of Applied Physics
Issue number5 A
Publication statusPublished - 2006 May 9


  • Cantilever
  • Coupling
  • Magnetization
  • Magnetoelectronics
  • Nanomechanics
  • NEMS
  • Reversal


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