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

fYear

2009

fDate

28-30 April 2009

Firstpage

565

Lastpage

566

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 H_k > 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, B_r, 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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IVELEC.2009.5193470

Filename

5193470