Architecturing high magnetic properties of NdFeB/SmFeN hybrid magnets.

Abstract: The anisotropic hybrid magnets of NdFeB/SmFeN have been prepared through the warm compact process in magnetic field. The thin particles of SmFeN (3–5µm) enter into the gaps among big particles of NdFeB (80–100µm), which has remarkable influence on the magnetic properties of hybrid magnets: (a) increasing the density of the magnets; (b) decreasing the content of organic binder in unit volume magnets so as to enhance the effective magnetic properties of the magnets; and (c) improving the magnetic orientation for the high maximum energy product of the magnets. As a result, the anisotropic hybrid magnets with high properties (Br=9.614KGs, H cj=13.71KOe, (BH)max=20.19MGOe and density=6.23g/cm3) has been obtained. [Copyright &y& Elsevier]