Title :
Magnetic properties and phase transfer of SmFe2 and SmFe 3 intermetallic compounds by nitrogenation
Author :
Ishizaka, Chikara ; Yoneyama, Tetsuhito ; Fukuno, Akira
Author_Institution :
TDK Corp., Narita, Chiba, Japan
fDate :
11/1/1993 12:00:00 AM
Abstract :
Magnetic properties and phase transfer of SmFe2 and SmFe3 compounds before and after nitrogenation are examined. It is found that SmFe2 and SmFe3 specimens show ferromagnetic properties with saturation magnetization of around 60 and 80 emu/g and Curie temperature of 425°C and 410°C, respectively. After nitrogenation, these compounds are thought to be decomposed into SmN and αFe, considering X-ray diffraction and thermomagnetic analysis. It is assumed that the produced soft magnetic phase would deteriorate the magnetic properties of Sm rich Sm2Fe17 Nx type magnets
Keywords :
Curie temperature; X-ray diffraction examination of materials; ferromagnetic properties of substances; iron alloys; magnetisation; permanent magnets; phase equilibrium; samarium alloys; αFe; 410 degC; 425 degC; Curie temperature; Sm rich Sm2Fe17Nx type magnets; SmFe2; SmFe2Nx; SmFe3 intermetallic compounds; SmFe3Nx; SmN; X-ray diffraction; ferromagnetic properties; magnetic properties; nitrogenation; phase transfer; saturation magnetization; soft magnetic phase; thermomagnetic analysis; Argon; Hydrogen; Intermetallic; Iron; Magnetic field measurement; Magnetic properties; Phase measurement; Powders; Size measurement; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
