Title :
Remanence enhancement in nanostructured melt spun Sm(Fe0.209 Cu0.061Zr0.025Co0.704)7.61
Author :
Crabbe, M.W. ; Davies, H.A. ; Buckley, R.A.
Author_Institution :
Dept. of Eng. Mater., Sheffield Univ., UK
fDate :
3/1/1994 12:00:00 AM
Abstract :
Ribbons of an industrial, high coercivity grade of Sm2Co17 alloy have been produced by melt spinning at very high substrate velocities. X-ray diffraction has shown the resultant material to be single phase and nanostructured, with grain sizes ranging to below 30 nm. The remanence, Jr, is consequently enhanced due to ferromagnetic exchange coupling, with values up to 0.75 T being observed. This corresponds to Jr/J s (where Js is the saturation polarisation) up to 0.7. Although the intrinsic coercivity is only moderate (up to 500 kA/m), it is still sufficiently high to give maximum energy product values up to 70 kJ/m3
Keywords :
X-ray diffraction examination of materials; cobalt alloys; coercive force; copper alloys; exchange interactions (electron); ferromagnetic properties of substances; grain size; iron alloys; melt spinning; nanostructured materials; remanence; samarium alloys; zirconium alloys; Sm(Fe0.209Cu0.061Zr0.025Co 0.704)7.61; Sm2Co17 alloy; X-ray diffraction; energy product; ferromagnetic exchange coupling; grain sizes; industrial high coercivity grade ribbons; intrinsic coercivity; melt spinning; nanostructured single phase; remanence; saturation polarisation; Coercive force; Grain size; Microstructure; Nanostructured materials; Remanence; Saturation magnetization; Spinning; Superconducting magnets; X-ray diffraction; Zirconium;
Journal_Title :
Magnetics, IEEE Transactions on
