Process for producing at least one thin-film magnetic head

摘要

The process is to be used to produce on a non-magnetic substrate a thin-film magnetic head which includes a conductive element carrying the magnetic flux and having two magnet legs, which have pole faces lying in a common plane. In this case, first of all a preproduct of the magnetic head is formed with end pieces of its magnet legs protruding beyond the plane of the pole faces. These end pieces are then removed from the underside of the preproduct up to the plane of the pole faces. The material removal is to be carried out with high accuracy. It is therefore provided according to the invention that an at most 2 mu m thick zone (25) of the end pieces (8, 9), immediately adjoining the plane (23) of the pole faces (F1, F2), is machined away by means of polishing by ion bombardment (28). <IMAGE>