US 5,691,867 A · Complex type thin film magnetic head and production method thereof

Abstract

The present invention intends to solve the above described problems and provides a high reliability complex type thin film magnetic head in which high recording magnetic field density is achieved without deteriorating an MR element by heat, and in the case when the complex type thin film magnetic head is of sliding type, eccentric friction likely to occur in a lower magnetic core and a upper magnetic core is relaxed and production method thereof. The complex type thin film magnetic head is structured by forming an MR head portion on an inductive head portion produced on a base substrate. Conductive coils are formed on the recess portions formed on the lower magnetic core because the groove portions exist through a first flattening layer.

Claims8

Dependent claims

A complex type thin film magnetic head comprising;

an induced type magnetic head portion containing;
a lower magnetic core made of soft magnetic material, having recess portions provided on the top surface of a substrate made of non-magnetic material;
conductive coils in the shape of spiral, formed on the recess portions disposed on the lower magnetic core through a flattening layer made of insulation material, said conductive coils being embedded in the recess portions and;
a upper magnetic core made of soft magnetic material, formed on said conductive coils through the flattening layer made of insulation material;
and a magnetic resistance effect type magnetic head portion containing;
magnetic resistance effect elements formed on said upper magnetic core serving as the lower magnetic layer at the same time through an insulation layer and;
a upper magnetic layer formed on said magnetic resistance effect element through an insulation layer.

4 more elements

Dependencies are inferred from the claim text.

Complex type thin film magnetic head and production method thereof

Life of this patent

Complex type thin film magnetic head and production method thereof

Life of this patent

Abstract

Claims8