Patent ID: 6851179

Claim:
A magnetic head producing method for producing a magnetic head comprising a magnetoresistive element which is a multilayer film comprising a fixed magnetic layer having magnetization fixed to a first direction and a free magnetic layer having an easy axis of magnetization that is directed to a second direction and having magnetization whose direction changes dependently on an external magnetic field, and the magnetoresistive element exhibiting a value of resistance that is dependent on the angle between the direction of the magnetization of the fixed magnetic layer and the direction of the magnetization of the free magnetic layer, the magnetic head detects an intensity of the external magnetic field by detecting the value of the resistance of a magnetoresistive element, comprising a hard magnetism layer forming step of forming a hard magnetism layer for applying a bias magnetic field to the magnetoresistive element in an area including at least one of a front area in the first direction and a rear area in the first direction viewed from the magnetoresistive element.