Title :
Effects of sintering temperature and composition variations on the magnetic properties of samarium cobalt magnets
Author :
Wolverton, Lindsey ; Falce, Louis R.
Author_Institution :
Semicon Assoc., Lexington, KY
Abstract :
A systemic study has been made of the effects of various sintering temperatures and variations in composition on the magnetic properties of samarium cobalt magnets. Residual induction, coercive force, and energy product were measured. Samarium content was varied between 35.0% to 36.5% at temperatures 1116, 1126, and 1136 degrees Celcius. A study was also made of the effect of the addition of gadolinium cobalt alloys to samarium cobalt on the reversible temperature coefficient of magnetization. The results showed that the coefficient could be reduced to near zero but that the residual induction and the energy product were greatly reduced as well.
Keywords :
cobalt alloys; coercive force; gadolinium alloys; magnetic materials; permanent magnets; samarium alloys; sintering; SmCoGd; coercive force; energy product; gadolinium cobalt alloys; magnetization; residual induction; reversible temperature coefficient; samarium cobalt magnets; sintering temperature; temperature 1116 degC; temperature 1126 degC; temperature 1136 degC; Atmosphere; Cobalt; Coercive force; Energy measurement; Force measurement; Gaussian processes; Magnetic properties; Magnets; Samarium; Temperature distribution;
Conference_Titel :
Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-1715-5
DOI :
10.1109/IVELEC.2008.4556518
