Method of manufacturing a thin film magnetic head having a write element with aligned pole tips

• Main Author: KAMIJIMA AKIFUMI
• Format: Patent
• Language: English
• Published: 18.09.2001
• Edition: 7
• Subjects: INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; PHYSICS

A thin film magnetic head in which the track width at the write pole can be set at a very small value with a high degree of accuracy without having to undergo a dry etching process. A first pole tip is laminated projecting out over a first yoke. a second pole tip is laminated onto a gap film, and has a track width which is equal to the track width of the first pole tip. The areas around the first pole tip, the second pole tip and the gap film are filled with a non-magnetic insulating film. The flattened surface of the non-magnetic insulating film forms a flat surface that is the same as the surface of the second pole tip, a second yoke, whose front end portion has a track width which is larger than the track width of the second pole tip, is laminated onto the second pole tip, with its two ends in the direction of the track width laminated onto the surface of the non-magnetic insulating film.