Magnetic domain is observed by MFM, and samples with thicker Fe layer have larger magnetic domain.The macro-magnetic properties are studied by VSM.

• 利用振动样品磁强计（VSM）测量样品的磁滞回线可以观察样品的宏观磁学性质，随着Fe层厚度的增加，样品的饱和磁化强度增加，而矫顽力迅速减小，之后趋于饱和。