Thin film magnetic head, method of manufacturing the same...

Details Thin film magnetic head, method of manufacturing the same... Thin film magnetic head, method of manufacturing the same...

2006-01-10

2006-01-10

Hassanzadeh, Parviz (Department: 1763)

Etching a substrate: processes

Forming or treating article containing magnetically...

C029S603070

Reexamination Certificate

active

06984333

ABSTRACT:
Provided is a thin film magnetic head capable of improving recording performance. The thin film magnetic head comprises a laminate including a main pole layer and an auxiliary pole layer being disposed in a region facing the main pole layer with a non-magnetic layer in between. After magnetic flux generated in a thin film coil is contained in the auxiliary pole layer through the non-magnetic layer, and then is concentrated on a front end neighboring portion of a front end portion in the auxiliary pole layer, the magnetic flux passes through the non-magnetic layer again so as to flow into a front end portion of the main pole layer. A “main magnetic flux incoming route” flowing from a rear end portion to the front end portion in the main pole layer and an “auxiliary magnetic flux incoming route” flowing from the auxiliary pole layer to the front end portion of the main pole layer can be obtained, so an amount of the magnetic flux supplied to a portion of the front end portion of the main pole layer on a trailing side increases. As a sufficient amount of the magnetic flux is supplied to a portion of the front end portion of the main pole layer on the trailing side so that an emitting amount of the magnetic flux increases, thereby a generation intensity and a magnetic field gradient of a perpendicular magnetic field can be obtained.

REFERENCES:
patent: 6286200 (2001-09-01), Huang et al.
patent: A 6-274811 (1994-09-01), None

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