Title :
Magnetostriction of melt-spun TbFe2-B alloys
Author :
Lim, S.H. ; Kim, S.R. ; Kim, H.J.
Author_Institution :
Magnetic Mater. Lab., Korea Inst. of Sci. & Technol., Seoul, South Korea
fDate :
9/1/1996 12:00:00 AM
Abstract :
The magnetostrictive characteristics of the melt-spun ribbons of (Tb0.33Fe0.67)1-xBx (x=0, 0.02, 0.05, 0.1 and 0.15) alloys are investigated as a function of wheel speed during melt-quenching. It is found that the magnetic softness at low fields is improved substantially by the addition of B to the alloys, but the value of λ at 8 kOe obtained for the ribbon quenched at an optimum condition decreases continuously as B content increases from x=0 (1300 ppm) to x=0.15 (630 ppm). The present ribbons have a nanocrystalline grain structure even in the as-spun state and exhibit better magnetostrictive characteristics than the bulk and similarly melt-spun ribbons with an additional annealing process
Keywords :
boron alloys; crystal microstructure; ferromagnetic materials; iron alloys; magnetic anisotropy; magnetic annealing; magnetostriction; melt spinning; quenching (thermal); soft magnetic materials; terbium alloys; TbFe2-B; annealing process; magnetic softness; magnetostrictive characteristics; melt-quenching; melt-spun TbFe2-B alloys; nanocrystalline grain structure; ribbon; wheel speed; Amorphous magnetic materials; Anisotropic magnetoresistance; Argon; Electrodes; Magnetic anisotropy; Magnetostriction; Nanostructures; Perpendicular magnetic anisotropy; Temperature; Wheels;
Journal_Title :
Magnetics, IEEE Transactions on
