Magnetic head with main and auxiliary poles for a perpendicularly magnetized recording medium

Abstract

Abstract 1. Magnetic head (2) for a recording medium (M) which is provided with at least one magnetisable storage layer (4) which contains a magnetically anisotropic material whose axis of easy magnetisation is directed substantially perpendicular to the surface of the medium and into which information is to be written along a track (56) of predetermined width in consecutive sections of predetermined extent by vertical magnetisation of the storage layer (4), which magnetic head (2) is provided with a conductor body (14), conveying the magnetic flux, which is deposited on a substrate body (16, 17) and has two poles (7, 8) facing the recording medium which represent a main and auxiliary pole and are arranged with a predetermined spacing (a) between each other, have opposite polarities, and with which at least one coil winding (12) is associated, the conductor body (14) having the two poles (7, 8) and the coil winding (12) being provided as thin layer structures on a flat side (15) of the substrate body (16, 17), which is to be arranged with respect to the recording medium (M) so that its normal (N) is directed at least approximately parallel to the longitudinal direction (v) of the track (5), characterized in that the conductor body (14) has a connecting limb (13) extending between two pole pieces forming the poles (7, 8), and only magnetically coupled to these poles pieces, in that the pole pieces and this connecting limb (13) are of a material whose direction of easy magnetisation (19, 22, 25) is in each case at least substantially perpendicular to the guide direction of the magnetic flux in these parts (7, 8, 13) and in that the windings of the coil winding (12) cross both the pole piece forming the main pole (9) and also the connecting limb (13).

Inventors

• 👤 Herbert Dr. Schewe
• 👤 Heinrich Dr. Diepers
• 👤 Wolfgang Bartsch

Bibliographic Details