Patent ID: 6198597
Filing Date: 2001-03-06
Classification: G11B

Abstract:
A thin-film magnetic head comprising:a magnetic gap disposed to be positioned on an air bearing surface of the magnetic head;a pair of magnetic poles disposed to hold the magnetic gap therebetween, at least one of the magnetic poles being composed of a T-shaped magnetic pole in the neighborhood of the air bearing surface, the T-shaped magnetic pole havinga front part of a magnetic pole disposed on the magnetic gap and having a width which roughly defines a track width, anda rear part of a magnetic pole disposed perpendicularly to the front part to form a T-shape, the rear part comprisinga first portion having a surface facing and partially contacting the front part and having a gradually increasing width from a first width at the surface facing the front part to a second width at the air bearing surface, anda second portion continuously following the first portion and having substantially the second width that is substantially constant at the air bearing surface; anda coil positioned between the pair of the magnetic poles to intersect the magnetic poles,wherein the first width of the surface of the first portion of the rear part is wider than the width of the front part.