Magnetic properties of RFe11-xCoxTiNy (R:Nd,Pr) compounds with ThMn12 type structure

RFe_11-xCo_x TiN_y (R :Nd,Pr) compounds with ThMn₁₂ type structures were synthesized through metallurgical processes such as melting, casting, pulverizing, and gas nitrogenation. The compounds showed increases in magnetic induction (4πI_m), anisotropic field (H_a), and Curie temperature (T_c) by nitrogenation as in the case of Sm₂Fe₁₇N_x . The large values of 4πI_m and H _a were observed in the range of nitrogen contents 1<y <1.5. Cobalt substitution for iron also led to an increase in 4πI_m and T_c. The magnetic properties of magnetically aligned NdFe₈Co₃TiN_1.3 powder were 4πI _m=15.0 kG, H_a=75 kOe, and T _c>600°C. The value of H_ci was 5.9 kOe in the case of a zinc bonded magnet prepared by the NdFe_7.5 Co_3.5TiN_1.4 powder