Patent ID: 7463455
Filing Date: 2008-12-09
Classification: B82Y,G11B

Abstract:
1. A magnetic head which is provided with a magnetoresistance effect element where a plurality of magnetic films are laminated and which conducts a sense current in a film thickness direction of the magnetoresistance effect element, the magnetic head comprising: a first shielding layer which is superimposed on one surface of the magnetoresistance effect element and whose area is larger than that of this one surface; a first lead layer which is formed ranging from a portion where the first shielding layer is superimposed on the magnetoresistance effect element to another portion on the first shielding layer and which applies the sense current to the magnetoresistance effect element; a second shielding layer which is superimposed on another surface of the magnetoresistance effect element opposite to the one surface and whose area is larger than that of the other surface; a second lead layer which is formed ranging from a portion where the second shielding layer is superimposed on the magnetoresistance effect element to another portion on the second shielding layer and which applies the sense current to the magnetoresistance effect element; a first insulating film which insulates a part of a contact surface between the first shielding layer and the first lead layer; and a second insulating film which insulates a part of a contact surface between the second shielding layer and the second lead layer.