Sintered NdFeB magnets are the most powerful magnets. Compared with conventional magnets e.g.: AlNiCo or hard ferrites, NdFeB magnets offer
the tenfold power density. The excellent magnetic characteristics of sintered NdFeB magnets are based on the strong magnetic matrix phase Nd2Fe14B (tetragonal structure), with a very high saturation magnetization Bs (Bs = 1.6 T) and a high magnetic anisotropic field strength Hcj of up to 41 kOe.
The current energy product from NdFeB magnets amounts to up to 55 MGOe. This achievement opened a wide field of new application possibilities for the material.