TY - JOUR
T1 - Magnetization reversal dependence on magnetic properties of a spin torque oscillator with in-plane anisotropy free layer and orthogonal polarizer
AU - Sbiaa, R.
N1 - Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.
PY - 2014/11
Y1 - 2014/11
N2 - The effect of magnetic properties on magnetization dynamics is studied for a spin torque oscillator (STO) composed of a free layer with an in-plane magnetic anisotropy and a reference layer with a fixed out-of plane magnetization. A transition from damped to uniform oscillations is observed for a critical value of saturation magnetization MS). In the uniform oscillations regime, the frequency is inversely proportional to MS. Similarly, the critical current for achieving uniform oscillations is investigated as a function of free layer intrinsic properties. In a second part of the study, the magnetostatic field (Hm) from the reference layer is considered and it is revealed that the out-of plane component of magnetization has a strong dependence on Hm. For a particular configuration, Hm could reduce the out-of plane component maximizing thus the out-put signal of the STO.
AB - The effect of magnetic properties on magnetization dynamics is studied for a spin torque oscillator (STO) composed of a free layer with an in-plane magnetic anisotropy and a reference layer with a fixed out-of plane magnetization. A transition from damped to uniform oscillations is observed for a critical value of saturation magnetization MS). In the uniform oscillations regime, the frequency is inversely proportional to MS. Similarly, the critical current for achieving uniform oscillations is investigated as a function of free layer intrinsic properties. In a second part of the study, the magnetostatic field (Hm) from the reference layer is considered and it is revealed that the out-of plane component of magnetization has a strong dependence on Hm. For a particular configuration, Hm could reduce the out-of plane component maximizing thus the out-put signal of the STO.
KW - Magnetization reversal
KW - Spin torque oscillator
KW - Spin transfer torque
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U2 - 10.1016/j.cap.2014.08.026
DO - 10.1016/j.cap.2014.08.026
M3 - Article
AN - SCOPUS:84907661233
SN - 1567-1739
VL - 14
SP - 1521
EP - 1525
JO - Current Applied Physics
JF - Current Applied Physics
IS - 11
ER -