کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1800077 | 1024498 | 2012 | 6 صفحه PDF | دانلود رایگان |
Magnetization switching dynamics in FePt/Au/FePt nanopillar, induced by spin-transfer torque is investigated by solving the Landau–Lifshitz–Gilbert–Slonczewski equation. The switching of magnetization occurs in the device, above a threshold current density of 1.72×108A/cm2, which agrees well with the previously reported experimentally measured value. This further reduces to 1.30×108A/cm2, when there is interface anisotropy in the free FePt layer, whose presence has been identified recently through scanning tunneling microscopy images and X-ray magnetic circular dichroism. The interface anisotropy also reduces the switching time from 15.59 ps to 9.56 ps when the device having a free FePt layer of thickness 1.5 nm is operated with a current density of 2.0×108A/cm2.
► Manuscript contains an important results of FePt/Au/FePt nanopillar device.
► Interface anisotropy present in the nanoferromagnetic film plays a crucial role.
► FePt nanopillar device, reduces the current required for magnetization switching.
► FePt nanopillar device reduces the switching time significantly.
► The results obtained here agrees well with the recent experimental measurements.
Journal: Journal of Magnetism and Magnetic Materials - Volume 324, Issue 24, December 2012, Pages 4219–4224