Magnetization reversal driven by a spin torque oscillator

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Abstract

Magnetization reversal of a magnetic free layer under spin transfer torque (STT) effect from a magnetic hard layer with a fixed magnetization direction and an oscillating layer is investigated. By including STT from the oscillating layer with in-plane anisotropy and orthogonal polarizer, magnetization-time dependence of free layer is determined. The results show that the frequency and amplitude of oscillations can be varied by adjusting the current density and magnetic properties. For an optimal oscillation frequency (fopt), a reduction of the switching time (t0) of the free layer is observed. Both foptand t0increase with the anisotropy field of the free layer.

Original languageEnglish
Article number092407
JournalApplied Physics Letters
Volume105
Issue number9
DOIs
Publication statusPublished - Sep 1 2014

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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