Nano-structured magnet with easy-plane anisotropy and high frequency properties beyond Snoek's limit

为了制造人工易平面磁体，我们研究了具有随机各向异性的纳米颗粒磁体的磁关联以及控制纳米颗粒易磁轴在平面内取向的新技术。因此，我们发现在单轴交变磁场中，在非平衡稳态下，超自旋与易轴的纵向、圆锥或平面取向之间存在着超亚磁有序。

To create artificial easy plane magnets, we have studied magnetic correlations of nano-particulate magnets with random anisotropy and novel technique to control in-plane orientation of easy axes of nanoparticles. Consequently, we found super-speromagnetic ordering between the super-spins and longitudinal, conic, or planar orientations of the easy axes in non-equilibrium steady states in uni-axial alternating magnetic fields.