Thin-film magnetic head designed for narrower tracks

Details Thin-film magnetic head designed for narrower tracks Thin-film magnetic head designed for narrower tracks

2005-05-24

2005-05-24

Watko, Julie Anne (Department: 2653)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

06898055

ABSTRACT:
A thin-film magnetic head has a second lower core layer sandwiched between a magnetic pole laminate, which is formed of a lower magnetic pole layer, a gap layer, and an upper magnetic pole layer laminated in this order from bottom to top, and a first lower core layer. Unlike a conventional thin-film magnetic head, this thin-film magnetic head does not include a gap depth defining layer. This arrangement makes it possible to easily form the magnetic pole laminate into a substantially rectangular shape, and solves the problems with the conventional thin-film magnetic head attributable to the presence of the gap depth defining layer, the problems being typically represented by a curved gap layer or a reduced volume of the upper magnetic pole layer. Thus, the intensity of a recording magnetic field in the vicinity of a gap can be stabilized and increased, allowing the manufacture of thin-film magnetic heads capable of successfully achieving narrower tracks.

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patent: 2001-52309 (2001-02-01), None

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