کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1786308 | 1023412 | 2014 | 5 صفحه PDF | دانلود رایگان |
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.
Journal: Current Applied Physics - Volume 14, Issue 11, November 2014, Pages 1521–1525