Anisotropic thin composite bonded magnets with multi-layer structure using self-organization technique

Abstract A highly densified Sm2Fe17N3/Nd2Fe14B-based composite bonded magnet with a two-layered structure was developed by two-step-consolidation of granular compound under axial and transverse magnetic field configurations. One of the layers of the magnet has perpendicular anisotropy and the other has transverse one, and the density and the (BH)max values of each layer exceeded 5.9 Mg/m3 and 145 kJ/m3, respectively. Finally, ring magnets, which consists of radially and circumferentially anisotropic layers, were prepared.