Title :
Magnetic properties of microcrystalline SmCox alloys by melt spinning
Author :
Chen, S.K. ; Chu, M.S. ; Tsai, J.L. ; Chin, T.S.
Author_Institution :
Dept. of Mater. Sci., Feng Chia Univ., Taichung, Taiwan
fDate :
9/1/1996 12:00:00 AM
Abstract :
High-coercivity SmCox alloys were prepared by melt spinning. X-ray diffraction data indicate that the alloys exhibit a single phase SmCo5 and Sm2Co17 structure at x=5.0 and x=8.5, respectively. A two-phase structure appears at 5.0<x<8.5. The coercivity of the studied alloys increases as the wheel speed is increased up to a maximum value of 40 m/s. The grain sizes of the as-spun alloys were measured to be 0.1-1.0 μm. The high coercivity of the microcomposite alloys can be explained from the unpinning of domain walls at nucleation sites
Keywords :
X-ray diffraction; cobalt alloys; coercive force; crystal structure; ferromagnetic materials; grain size; magnetic domain walls; melt spinning; permanent magnets; samarium alloys; SmCo5; SmCox; X-ray diffraction; coercivity; domain wall unpinning; grain sizes; melt spinning; nucleation sites; Annealing; Coercive force; Crystallization; Magnetic domain walls; Magnetic properties; Metastasis; Spinning; Tellurium; Wheels; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
