Abstract: A thin-film magnetic head for writing information in and reading information from a track of a magnetic recording medium in which the head comprises a magnetically permeable yoke having two limbs between which a writing/reading gap is formed. In a construction in which the limbs of the yoke overlap each other at the area of the writing/reading gap, they are bridged by a magneto-resistive reading element at a location remote from the reading/writing gap. A conductor is provided in some forms of the invention which extends intermediate the laterally overlapping limbs. This conductor is utilized for producing a writing flux in the magnetic yoke. Another conductor may be provided which extends through a window or opening in the yoke, which is remote from the reading/writing gap. This other conductor is utilized during writing operation to maximize efficiency.

Abstract: A thin-film magnetic head for writing information in and reading information from a track of a magnetic recording medium in which the head comprises a magnetically permeable yoke having two limbs between which a writing/reading gap is formed. In a construction in which the limbs of the yoke are opposite to each other, one limb is interrupted by a gap which is bridged by a magneto-resistive reading element.

Abstract: A thin-film magnetic head for writing information in and reading information from a track of a magnetic recording medium in which the head comprises a magnetically permeable yoke having two limbs between which a writing and reading gap is formed. In a construction in which the limbs of the yoke are opposite to each other, one limb is interrupted by a gap which is bridged by a magneto-resistive reading element. In a construction in which the limbs of the yoke overlap each other at the area of the writing/reading gap, they are bridged by a magneto-resistive reading element in another place.

Abstract: A thin-film magnetic head having improved playback properties in which the gap-bounding core parts overlap each other laterally while enclosing a layer having a gap and in which a first core part has the shape of a closed loop and is bridged in the center by a second core part. The parts of the first core part on either side of the bridge are provided with identical coils, while the first core part at the area of the overlap is divided centrally by an extra gap. Upon playing back, the difference signals of the coils then provides an indication as regards the position relative to the track.

Abstract: The invention relates to a method of manufacturing a device, for example, a magnetic head for recording and playing back information on a magnetisable medium.In this method, a substrate of semiconductor material is profiled by a selective electrolytic etching process.Preceding the etching process, the part of the substrate to be removed by said process is formed by a local doping treatment, for example, by diffusion.The doping treatment may be carried out in several overlapping steps.