论文标题
单晶MGO $ \ text {/} $ fe $ \ text {/} $ mgo膜中磁性垂直表面各向异性的自旋波研究
Spin wave study of magnetic perpendicular surface anisotropy in single crystalline MgO$\text{/}$Fe$\text{/}$MgO films
论文作者
论文摘要
宽带铁磁共振是在MGO层之间夹在不同厚度的单晶Fe膜中测量的。通过研究均匀的研究和第一个垂直的站立旋转波模式，可以实现薄膜（交换常数，立方，单轴和表面各向异性）的详尽磁性表征。非转向旋转波传播的其他测量结果使我们能够将两个界面中的每个界面中的每个贡献分离为总表面各向异性。结果与准粉膜内部和两个磁性不同的顶部和底部接口的模型一致，这是归因于不同氧化态的差异。
Broadband ferromagnetic resonance is measured in single crystalline Fe films of varying thickness sandwiched between MgO layers. An exhaustive magnetic characterization of the films (exchange constant, cubic, uniaxial and surface anisotropies) is enabled by the study of the uniform and the first perpendicular standing spin wave modes as a function of applied magnetic field and film thickness. Additional measurements of non-reciprocal spin wave propagation allow us to separate each of the two interface contributions to the total surface anisotropy. The results are consistent with the model of a quasi-bulk film interior and two magnetically different top and bottom interfaces, a difference ascribed to different oxidation states.
