Comparison between Spin Torque Nano Oscillator of Tri and Penta layer structure: A macro-magnetic insight.

In this study, we have modeled a simple Spin Torque Nano Oscillator [STNO] of Tri and Penta layer structure theoretically, using macro-spin approach. Tri-layer Spin Torque Nano Oscillator [T-STNO], refers to a device made up of three layers comprising of a couple of Ferro-Magnetic layers separated between a Non-Magnetic [NM] spacer (i.e.) [FM1/NM1/FM2]. Penta-layer Spin Torque Nano Oscillator [P-STNO] refers that the device is made up of five layers which comprised of three FM layers aligned between two NM spacer (i.e.) [FM1/NM1/FM2/NM2/FM3]. The idea of the work is to investigate and report the results of the P-STNO, (which grabbed many researchers' attention) and to compare its functionalities with the conventional T-STNO which has been commercialized, already. The magnetization precession dynamics led by Spin Transfer Torque [STT] is studied numerically by solving the equation called Landau-Lifshitz-Gilbert-Slonczewski [LLGS]. The author wishes that the designed P-STNO device open a new window for the spintronic based devices because of its superior output functionalities as compared to the conventional T-STNO device. [ABSTRACT FROM AUTHOR]