We studied the influence of surface pinning on the domain structure and magnetization dynamics in permalloy stripe domain films. The effect of the pinning in the film was controlled by introducing the defects via the interface roughness of the silicon substrate. The results show that the pinning, induced by these defects, leads to the irregularity of the stripe domain and change of their local distributions. The irregular stripe domain pattern results in the weakening of magnetization resonant- frequency and intensity of the film. The results further were verified by micromagnetic simulation, confirming that the regularity and homogeneity of the stripe domain are important for the excitation of spin waves in stripe domain films. Our results show the important significance of the domain structure for the application of spin-wave propagation in magnetic films.

我们研究了表面钉扎对坡莫合金条纹畴膜中畴结构和磁化动力学的影响。通过经由硅基板的界面粗糙度引入缺陷来控制钉扎在膜中的效果。结果表明，由这些缺陷引起的钉扎导致条带域的不规则性及其局部分布的变化。不规则的条纹畴图案导致膜的磁化共振频率和强度减弱。通过微磁仿真进一步验证了结果，证实了条纹畴的规则性和均匀性对于激发条纹畴膜中的自旋波很重要。