Title :
High coercivity in melt-spun SmFe10(Ti,M)2 ribbons (M=V/Cr/Mn/Mo)
Author :
Okada, M. ; Kojima, A. ; Yamagishi, K. ; Homma, M.
Author_Institution :
Dept. of Mater. Sci., Tohoku Univ., Sendai, Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
Magnetic properties of SmFe10(Ti,M)2 melt-spun ribbons were studied, where M is V, Cr, Mn, and Mo. The ribbons (M=V/Cr/Mo) quenched at 20 m/s exhibit the high coercivities of 4.2-5.5 kOe. Annealing the ribbons quenched at 40 m/s enhances their coercivities in the range of 5.9-10.0 kOe. In particular, SmFe10 (TiV) and SmFe10(TiCr) ribbons yield coercivities of 10.0 kOe and 7.9 kOe, respectively. This is the highest value among the reported melt-spun ThMn12-type structure ribbons. The importance of Sm atmosphere during annealing in minimizing the Sm evaporation from ribbons is also demonstrated
Keywords :
chromium alloys; coercive force; ferromagnetic properties of substances; iron alloys; manganese alloys; molybdenum alloys; permanent magnets; samarium alloys; titanium alloys; vanadium alloys; Sm evaporation; SmFe10(TiCr)2; SmFe10(TiMn)2; SmFe10(TiMo)2; SmFe10(TiV)2; annealing; coercivities; melt-spun ribbons; Annealing; Atmosphere; Atmospheric measurements; Chromium; Coercive force; Magnetic field measurement; Magnetic hysteresis; Magnetic properties; Wheels; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
