THIN FILM INDUCTION WRITE MAGNETIC HEAD AND METHOD OF MANUFACTURING THE SAME

摘要

A thin film induction write magnetic head has an upper magnetic layer (28) and a lower magnetic layer (29). In the tip of the magnetic head is formed a gap layer (39) between narrow, small upper and lower sub-magnetic poles (35, 36). By restricting the shape including the length (GD) in the direction vertical to the flying surface of the upper sub-magnetic pole, the magnetic field generated around the edge (28a) of the upper magnetic layer overhanging from the upper sub-magnetic pole in the direction of the width of the recording track is weakened. Because of the weakening, the width of the recording track is narrowed and the recording blur is relieved, thus providing a thin film induction write magnetic head having good magnetic field characteristics suitable for improving the surface recording density.