抄録
An experiment was carried out to investigate the magnetic and physical properties of (Sm1-xNdx)2-(Fe0.8Co0.2)17Ny (x=0∼0.5) in which y value is 3. The anisotropy field (HA) in (Sm1-xNdx)2(Fe0.8Co0.2)17Ny compounds decreased linearly with increasing x value, while the saturation magnetization (Js) increased. It was found that HA amd Js of an (Sm0.9Nd0.1)2(Fe0.8Co0.2)17N3.07 compound were 10.4 MA/m and 193.6×10-6Wb · m/kg, respectively. Anisotropic epoxy-bonded magnets were prepared from (Sm0.9Nd0.1)2(Fe0.8Co0.2)17N3.07 powder of about 3∼5μm by a compressing molding process. The magnetic properties of a typical bonded magnet were (BH)max=101.8 kJ/m3, Jr=0.89 T, HcJ=394 kA/m, and HcB=314 kA/m. Magnetization jumps were observed on the hysteresis loop of a bonded magnet at 7K.
