Nanocompositional Electron Microscopic Analysis and Role of Grain Boundary Phase of Isotropically Oriented Nd-Fe-B Magnets

Figure 13

Comparison of the measured demagnetization curve of the Nd-Fe-B nanocomposite melt-spun ribbon with calculated curves for directly coupled only hard magnetic grains (only Nd₂Fe₁₄B) and for the model structure with 8 soft ferromagnetic grains and 21 Nd₂Fe₁₄B grains (8 sm-G). 45° and 60° denote the average misorientation of the granular model structure. The average grain size is 60 nm.