铁磁（FM）/非磁（NM）结构的双层膜中发现的自旋泵浦（spin pumping）效应是磁学和自旋电子学中的一个突破性发展，因此吸引了众多的研究兴趣。它和铁磁层自旋极化电流相关，同时又和非磁层的自旋轨道耦合有直接联系。本项目采用具有较高的自旋轨道耦合系数的稀土金属调制非磁层，运用铁磁共振和输运两种方法，并结合结构、磁性和同步辐射分析等手段，研究不同稀土掺杂对铁磁/非磁过渡-稀土合金（Py/NM-RE）复合纳米双层膜的结构和界面的影响，得到自旋泵浦强度、界面混合电导以及非磁层的自旋轨道耦合强度和自旋扩散长度的调控规律。从而探索该复合纳米双层膜中的界面自旋泵浦效应和非磁层自旋轨道耦合对自旋动力阻尼的影响机制。这些研究结果将有利于开发新型复合磁性材料和新型强自旋-轨道耦合的非磁材料，有利于集成多功能自旋器件。

The spin pumping effect discovered in ferromagnetic(FM)/nonmagnetic(NM) bilayers is a breakthrough development in magnetism and spintronics , attracting much research interests. It is directly related to the spin polarized current in the ferromagnetic layer and to the spin-orbit coupling of the nonmagnetic layer. In this project, the rare earth metal with high spin-orbit coupling is selected to modify the nonmagnetic layer. By using the methods of ferromagnetic resonance and electric transport method, combining the structures analyses, magnetic property measurement and analyses with synchrotron radiation etc., the effect of the structures and interface of the bilayers of Fe based alloy/nonmagnetic-rare earth alloy(FM/NM-RE) with different rare earth elements and dopants will be studied. The regulation of the spin pumping effect and interfacial mixing conductivity in the combined film , as well as spin-orbital coupling and spin diffusion length in the non-magnetic layer are obtained. Thus the influence on the mechanism of spin dynamic damping in above combined films will be explored by using spin pumping of the ferromagnetic layer and spin-orbit coupling in nonmagnetic layer. The results of this study are beneficial for the development of the novel complex magnetic materials and the novel nonmagnetic materials with strong spin-orbit coupling, beneficial for integrating multifunctional spin devices.