Title :
Magnetic properties of RFe11-xCoxTiNy (R:Nd,Pr) compounds with ThMn12 type structure
Author :
Suzuki, Shunji ; Inoue, Naomi ; Miura, Toshihiko
Author_Institution :
Minebea Co. Ltd., Shizuoka, Japan
fDate :
9/1/1992 12:00:00 AM
Abstract :
RFe11-xCox TiNy (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 (4πIm), anisotropic field (Ha), and Curie temperature (Tc) by nitrogenation as in the case of Sm2Fe17Nx . The large values of 4πIm 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 4πIm and Tc. The magnetic properties of magnetically aligned NdFe8Co3TiN1.3 powder were 4πI m=15.0 kG, Ha=75 kOe, and T c>600°C. The value of Hci was 5.9 kOe in the case of a zinc bonded magnet prepared by the NdFe7.5 Co3.5TiN1.4 powder
Keywords :
Curie temperature; cobalt alloys; coercive force; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic properties of fine particles; magnetisation; neodymium alloys; permanent magnets; powder metallurgy; praseodymium alloys; titanium alloys; Curie temperature; NdFe11-xCoxTiNy; NdFe7.5Co3.5TiN1.4 powder; NdFe8Co3TiN1.3 powder; PrFe11-xCoxTiNy; ThMn12 type structure; anisotropic field; casting; coercive field; gas nitrogenation; magnetic induction; magnetic properties; magnetization curve; melting; metallurgical processes; pulverizing; zinc bonded magnet; Anisotropic magnetoresistance; Casting; Iron; Magnetic anisotropy; Magnetic properties; Nitrogen; Perpendicular magnetic anisotropy; Powders; Temperature; Tin;
Journal_Title :
Magnetics, IEEE Transactions on
