Apparatus and method for evaluating magnetic heads, and disk...

Details Apparatus and method for evaluating magnetic heads, and disk... Apparatus and method for evaluating magnetic heads, and disk...

2007-02-27

2007-02-27

Lefkowitz, Edward (Department: 2862)

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

Reexamination Certificate

active

10711782

ABSTRACT:
A DC current is supplied to the write coil of a GMR head1equipped with a completed HGA (Head Gimbal Assembly). The element part of the GMR head1is thereby thermally deformed. Thus deformed, the element part protrudes, abutting on a rotating laser-bump disk2, above which the HGA is floating. When the element part abuts on the disk2, a magnetic field (2470 gauss) that extends in a direction opposite to the magnetization direction of the fixed layer of the GMR head1is applied to the top of a core slider5.

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patent: 2001-006133 (2001-01-01), None

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