Motor using magnet

Details Motor using magnet Motor using magnet

2006-06-20

2006-06-20

Donovan, Lincoln (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

C252S06251C

Reexamination Certificate

active

07064642

ABSTRACT:
A permanent magnet comprises a hard magnetic material that contains at least a rare earth element and an anti-ferromagnetic material, wherein the hard magnetic material and the anti-ferromagnetic material are magnetically coupled. A volume ratio of the anti-ferromagnetic material is 20% or less, based on the permanent magnet.

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J. Sort et al., Room-temperature Coercivity Enhancement in Mechanically Alloyed Antiferromagnetic-ferromagnetic Powders, Applied Physics Letters, American Institute of Physics, vol. 75, No. 20, 1999. pp. 3177-3179, no month.

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