Magnetic head and method of making the same

Abstract

A thin film type magnetic head, in which a conductor is accommodated within a groove formed in part of a ferromagnetic substrate constituting part of a magnetic core, and a ferromagnetic film is disposed on the conductor to constitute part of the magnetic core. With this structure, it is possible to reduce the number of steps of layers constituting the magnetic head for reducing damage or breakage of the stepped portions of the layers and also increase the core gap in a central part of the core so as to reduce leakage flux even in the thin film magnetic head as well as bettering dissipation of Joule heat produced in the conductor.

Description

Claims

1. A magnetic head comprising;

a ferromagnetic substrate,

a groove formed in part of said ferromagnetic substrate,

a filler filled in said groove, said filler containing a conductive material,

a ferromagnetic layer provided in a region extending over the top area of said groove,

a magnetic gap formed between said ferromagnetic substrate and said ferromagnetic layer on one side of said groove, and

a magnetic coupling provided between said ferromagnetic substrate and said ferromagnetic layer formed on the other side of said groove,

said magnetic gap and said magnetic coupling constituting a magnetic core of said magnetic head.

2. A magnetic head according to claim 1, wherein said filler containing said conductive material is a conductive glass, and said magnetic head further comprises an insulating layer formed between said conductive glass and said ferromagnetic layer.

3. A magnetic head according to claim 1, wherein said conductive material is constituted by a non-magnetic conductive material and an insulator.

4. A magnetic head according to claim 1, wherein said ferromagnetic layer constitutes a magnetoresistive element.

5. A magnetic head according to claim 1, wherein a plurality of ferromagnetic layers are formed in a row and in the same plane common to said ferromagnetic substrate, said groove being common to each said ferromagnetic layer.

6. A magnetic head according to claim 1, further comprising a magnetoresistive element provided over a surface of the portion of said groove and substantially parallel with said groove.