Magnetic force microscope study on quick-quenched ribbon Sm2Fe14.5Cu0.5Ga2Cx

The microstructure and magnetic domain structures of the annealed quick-que nched ribbon Sm2Fe14.5Cu0.5Ga2Cx were studied by using magnetic force micro scope. The results of the topography image and magnetic force image(MFI) sh ow that the grain size is between 25-55 nm, whereas the domain size is betw een 200-400 nm. The magnetic domain length scale is much larger than the gr ain size. The domain comprises of a lot of grains, which were called intera ction domain. The detail analysis such as power spectral density analysis, the maximum phase shift and roughness analyses on the MFI demonstrated that they are connected with the intrinsic magnetic properties such as H-A in s ome way.