Magnetization reversal driven by a spin torque oscillator

R. Sbiaa

doi:10.1063/1.4895029

Magnetization reversal driven by a spin torque oscillator

R. Sbiaa^*

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

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 (f_opt), a reduction of the switching time (t₀) of the free layer is observed. Both f_optand t₀increase with the anisotropy field of the free layer.

Original language	English
Article number	092407
Journal	Applied Physics Letters
Volume	105
Issue number	9
DOIs	https://doi.org/10.1063/1.4895029
Publication status	Published - Sept 1 2014

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4895029

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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.",

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AB - 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.

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Magnetization reversal driven by a spin torque oscillator

Abstract

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