论文标题
NI100-XFEX/PT旋转厅纳米振荡器的自动振荡行为的组成效应
Compositional effect on auto-oscillation behavior of Ni100-xFex/Pt spin Hall nano-oscillators
论文作者
论文摘要
我们证明了Ni100-XFEX/PT（X = 10至40）纳米收缩的旋转霍尔纳米振荡器的磁力动力学和自动振荡特性的组成效应。使用自旋扭曲的铁磁共振（ST-FMR）在微丝网上进行，我们测量了Fe含量的增强和自旋霍尔效率的显着降低，这降低了旋转泵送的贡献。对旋转厅效率的强组成效应主要归因于富含铁的设备中饱和磁化的增加。直接结果，需要较高的电流密度才能在富含Fe的纳米收缩设备中以较高的微波频率驱动自旋波自动振荡。我们的结果确定了组成效应在工程中用于Microwav Eand Magnonic应用的磁力动力学和自动振荡性能。
We demonstrate the compositional effect on the magnetodynamic and auto-oscillations properties of Ni100-xFex/Pt (x= 10 to 40) nanoconstriction based spin Hall nano-oscillators. Using spin-torque ferromagnetic resonance (ST-FMR) performed on microstrips, we measure a significant reduction in both damping and spin Hall efficiency with increasing Fe content, which lowers the spin pumping contribution. The strong compositional effect on spin Hall efficiency is primarily attributed to the increased saturation magnetization in Fe-rich devices. As a direct consequence, higher current densities are required to drive spin-wave auto-oscillations at higher microwave frequencies in Fe-rich nano-constriction devices. Our results establish the critical role of the compositional effect in engineering the magnetodynamic and auto-oscillation properties of spin Hall devices for microwav eand magnonic applications.
