| Autor: |
Bhoomeeswaran, H., Bharath, S. Guru, Vivek, T., Sabareesan, P. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2019, Vol. 2162 Issue 1, p020169-1-020169-5, 5p |
| Abstrakt: |
In the present work, we have reported the results based on the effect of Bi-Quadratic Coupling [BQC] as well as the Orange Peel Coupling [OPC] in different Heterogeneous based Spin Torque Nano Oscillator [STNO] device. STNO, comprised of trilayer (X/Cu/Py) (i.e) two ferromagnetic layers separated by a non magnetic spacer. Those Ferro Magnetic [FM] layers are called fixed and free, because the corresponding magnetization tends to be fixed and free. Throughout the macro magnetic framework, Cu is taken as the non magnetic spacer and Py is taken in free layer. X (= Fe and Co) denotes the FM taken in the pinned layer for both the BQC and OPC coupling mechanism. The magnetization switching dynamics of the free layer for all devices are studied by solving the governing Landau-Lifshitz-Gilbert-Slonczewski [LLGS] equation. For all the four devices, switching time is calculated in the presence and absence of both BQC and OPC separately. The switching time for BQC based device [Co/Cu/Py] is calculated as 136 ps and 166 ps in the presence and absence respectively. Similar results are found in another BQC based device [Fe/Cu/Py]. The calculated switching time for the device is 135 ps and 181 ps in the presence and absence respectively. As far as the OPC is concerned, the switching time for the device [Co/Cu/Py] is found to be 111 ps and 160 ps in the presence and absence respectively. Relatively, other OPC based device [Fe/Cu/Py] switches 113 ps and 163 ps in the presence and absence respectively. The results depicts that OPC based devices switches rapidly as compared to BQC based devices which are highly applicable in ultra high density recording media. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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