Cylindrical permanent magnet and method of manufacturing

Details Cylindrical permanent magnet and method of manufacturing Cylindrical permanent magnet and method of manufacturing

1989-10-06

1993-04-20

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

264DIG58, 310156, H01F 702

Patent

active

RE0342297

ABSTRACT:
A cylindrical permanent magnet suitable for use as the rotor magnet of a stepping motor. The magnet is a sintered cylindrical permanent magnet having a composition expressed by MO.nFe.sub.2 O.sub.3, where M represents Ba, Sr, Pb or mixture thereof, while n represents a value of 5 to 6. The sintered cylindrical permanent magnet is provided on its surface with multipolar anisotropy of more than 8 (eight) magnetic poles. Disclosed also is a method of producing the cylindrical permanent magnet.

REFERENCES:
patent: 3114715 (1963-12-01), Brockman et al.
patent: 4057606 (1977-11-01), Kobayashi et al.

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