Supposing that the damaged layer is mainly composed of high density dislocations, a relation between the FME linewidth anisotropy and the magnetostriction constants is deduced based on micromagnetism theory and the two-magnon scattering process.

• 若损伤层主要由位错组成,按微磁学理论和双磁振子散射模型可得到位错密度、磁致伸缩、磁化强度等与线宽的关系。