Specially oriented material and magnetization of permanent magne

Details Specially oriented material and magnetization of permanent magne Specially oriented material and magnetization of permanent magne

1999-01-15

2000-12-05

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Linear

310 12, H02K 4100

Patent

active

061570990

ABSTRACT:
A permanent magnet for an actuator motor of a disk drive is provided herein. The permanent magnet includes an arch shaped magnet body which is made of a magnet powder. The magnet body including a first segment and a second segment which are substantially side by side. Each segment has a north pole and a spaced apart south pole. Each segment includes a first region having a first region axis which extends between the north pole and the south pole and a second region which encircles the first region. Importantly, the magnet powder is aligned during manufacturing to form a powder pattern having first region powder lines in the first region which are substantially parallel with the first region axis and second region powder lines in the second region which are angled relative to the first region axis. Further, the magnet body includes a magnetization pattern having first region magnetization lines in the first region which are substantially parallel with the first region axis and second region magnetization lines in the second region which are angled relative to the first region axis.

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patent: 4888512 (1989-12-01), Shimizu
Hitachi Rare-Earth Magnet Brochure, Hitachi Metal, Ltd., Front cover, p. 42 and Rear cover, date of publication unknown.

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