Permanent magnets and R-TM-B based permanent magnets

Details Permanent magnets and R-TM-B based permanent magnets Permanent magnets and R-TM-B based permanent magnets

2006-04-11

2006-04-11

Sheehan, John P. (Department: 1742)

Metal treatment

Stock

Magnetic

C420S083000, C420S121000

Reexamination Certificate

active

07025837

ABSTRACT:
Permanent magnets in which the ferromagnetic phase is matched with the grain boundary phase, and permanent magnets in which magnetocrystalline anisotropy in the vicinity of the outermost shell of the major phase is equivalent in intensity to that in the inside to suppress nucleation of the reverse magnetic domain, more specifically having a magnetocrystalline anisotropy not less than one-half the magnetocrystalline anisotropy of the interiors of the ferromagnetic grains, are disclosed.

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