Title :
New grade of temperature compensated samarium cobalt permanent magnets and design considerations
Author :
Takasumi, K. ; Dent, P. ; Liu, J. ; Marinescu, M. ; Walmer, M.
Author_Institution :
Electron Energy Corp., San Marcos, CA, USA
Abstract :
Electron Energy has successfully developed a new grade of zero Reversible Temperture Coeffeicient (RTC) magnets with maximum energy product, (BH)max, of 18.0 MGOe and Hk > 12 kOe. The new grade of zero RTC 18 augments the existing product line and surpasses the prior highest energy zero RTC grade with a (BH)max of 16 MGOe. The RTC of the newly developed magnets is suitable for TWT applications where little change in magnetic induction, Br, over a wide temperature range of up to -50deg to +150degC is desired. Excellent magnetic properties were obtained with reversible temperature coefficients on the order of -0.001% /degC .
Keywords :
energy states; permanent magnets; design considerations; electron energy; reversible temperture coefficient magnets; temperature compensated samarium cobalt permanent magnets; Cobalt; Demagnetization; Electrons; Magnetic field measurement; Magnetic materials; Magnetic properties; Permanent magnets; Powders; Samarium alloys; Temperature distribution; RTC; magnetic induction; magnets; maximum energy product; reversible temperature coefficient; samarium cobalt;
Conference_Titel :
Vacuum Electronics Conference, 2009. IVEC '09. IEEE International
Conference_Location :
Rome
Print_ISBN :
978-1-4244-3500-5
Electronic_ISBN :
978-1-4244-3501-2
DOI :
10.1109/IVELEC.2009.5193470
