各向异性磁盘中涡旋的静态和动态特性
Static and dynamic properties of vortices in anisotropic magnetic disks
摘要：
研究了磁各向异性（$K_z$）对小圆盘中磁涡旋的静态和动态性质的影响。我们的微磁计算表明，对于一个范围的$K_z$有一个扩大的涡核。我们分析了$K_z$对脉冲场激励下涡旋芯磁化反转动力学的影响。$K_z$的存在下，这导致更好地解决涡旋结构，使我们能够讨论在更详细的作用所发挥的平面内和垂直分量的旋向场在涡旋-反涡旋成核和湮灭。
英文摘要：
We investigate the effect of the magnetic anisotropy ($K_z$) on the static and dynamic properties of magnetic vortices in small disks. Our micromagnetic calculations reveal that for a range of $K_z$ there is an enlargement of the vortex core. We analyze the influence of $K_z$ on the dynamics of the vortex core magnetization reversal under the excitation of a pulsed field. The presence of $K_z$, which leads to better resolved vortex structures, allows us to discuss in more details the role played by the in-plane and perpendicular components of the gyrotropic field during the vortex-antivortex nucleation and annihilation.
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