The State Key Laboratory of Refractories and Metallurgy, School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, People's Republic of China.
Nanotechnology. 2019 May 24;30(21):21LT01. doi: 10.1088/1361-6528/ab0858. Epub 2019 Feb 19.
The spin dynamics in composite nanowires possessing both perpendicular magnetic anisotropy and in-plane magnetic anisotropy (IMA) regions are studied. It is found that, driven by proper currents, spin waves can be excited and propagate along the nanowires, leading to sustained oscillations of the magnetic moments. The frequency and amplitude strongly depend on the length of the longitudinal magnetized part (L ), and can be effectively tuned by applied current. The assistance of an applied field may help to obtain large frequencies and amplitudes simultaneously. Considering their ease of manufacture, these kinds of composite nanowires hold great promise for nano-oscillator applications.
研究了具有垂直各向异性和平面各向异性（IMA）区域的复合纳米线中的自旋动力学。结果发现，在适当电流的驱动下，自旋波可以被激发并沿纳米线传播，从而导致磁矩的持续振荡。频率和幅度强烈依赖于纵向磁化部分（L）的长度，并且可以通过施加电流有效地进行调节。施加磁场的辅助作用可能有助于同时获得较大的频率和幅度。考虑到它们易于制造，这些复合纳米线在纳米振荡器应用中具有很大的前景。
