Title :
Magnetic properties of melt-spun Sm/sub 10/(Fe,V)/sub 90/N/sub y/ with TbCu/sub 7/-type structure
Author :
Suzuki, Satoshi ; Suzuki, Satoshi ; Yamamoto, Hiroshi
Author_Institution :
Res. & Dev. Center, Minebea Co. Ltd., Shizuoka, Japan
Abstract :
Vanadium substituted Sm/sub 10/(Fe,V)/sub 90/ alloys were prepared by a single roller rapid-quenching method. The melt-spun Sm/sub 10/Fe/sub 82.5/V/sub 7.5/ alloy showed the TbCu/sub 7/-type structure for a wide range of wheel speeds between 15 and 50 m/s, while the Sm/sub 10/Fe/sub 90/ binary alloy showed the same structure at wheel speeds over 45 m/s. It was found that the substitution of vanadium for iron in Sm/sub 10/(Fe,V)/sub 90/ alloys gives a greater range of stability of the TbCu/sub 7/-type structure. Nitrogenation was carried out by heating alloy powders in nitrogen gas. The magnetic properties of Sm/sub 10/Fe/sub 82.5/V/sub 7.5/N/sub /spl nu// powder nitrogenated at 773 K for 6 h were: J/sub r/=0.71 T, H/sub cJ/=535 kA/m (6.7 kOe), and (BH)/sub max/=63.7 kJm/sup 3/.<>
Keywords :
Curie temperature; coercive force; crystal microstructure; crystal structure; ferromagnetic materials; iron alloys; magnetic hysteresis; samarium alloys; vanadium alloys; 6 hour; 773 K; Sm/sub 10/(FeV)/sub 90/N; TbCu/sub 7/-type structure; alloy powders; magnetic properties; melt-spun Sm/sub 10/(Fe,V)/sub 90/N/sub y/; nitrogenation; single roller rapid-quenching method; stability; Aluminum alloys; Atmosphere; Iron alloys; Magnetic analysis; Magnetic properties; Nitrogen; Powders; Samarium alloys; Wheels; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
