Siemens Aktiengesellschaft

Winfried Berghof

Alfred Pichler

Rainer Raeth

A method for a definitive fixing of the breadth of magnetic layers in the vicinity of the end face of a recording carrier, which breadth determines the track breadth, in which an integrated magnetic head structure is carried on a substrate and has a large number of thin magnetic, non-magnetic, insulating and electrically conductive layers stacked one upon an another, and in which originally broader magnetic layers are partially worn down by ion bombardment, the zones not to be worn down being first covered with a mask. Ion bombardment is carried out at right angles to the thin layers, i.e. at right angles to the plane of the substrate, with the mask suitably disposed.

Method for the production of integrated magnetic head structures

An improved integrated magnetic head structure of the type having a plurality of thin metal layers forming a magnetic head winding. These layers are generally symmetrical to a plane of symmetry lying perpendicularly to a gap plane on a non magnetic, insulating substrate, and these layers have flanks which are, with increasing distance from the substrate, shortened by a predetermined length distance. This head structure requires only a few masks to make with a minimum of mask adjustments. Extremely fine structures can be produced.

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Taufkirchen, Germany

Winfried Berghof