Patent ID: 9129622
Filing Date: 2015-09-08
Classification: G01R,G11B,H01L

Abstract:
1. A magnetoresistive effect element of a current perpendicular to plane (CPP) structure in which a sense current is applied in a lamination direction, the magnetoresistive effect element comprising: a magnetoresistive effect part; and an upper shield layer and a lower shield layer that are laminated and formed in a manner sandwiching the magnetoresistive effect part from above and below, wherein the magnetoresistive effect part comprises the upper shield layer and the lower shield layer have inclined magnetization structures in which magnetizations of the upper shield layer and the lower shield layer are respectively inclined with respect to a track width direction, the magnetizations of the upper shield layer and the lower shield layer are mutually substantially orthogonal, the first ferromagnetic layer is indirectly magnetically coupled with the upper shield layer via a first exchange coupling function gap layer that is positioned between the first ferromagnetic layer and the upper shield layer, such that a magnetization of the first ferromagnetic layer is inclined with respect to the track width direction, the second ferromagnetic layer is indirectly magnetically coupled with the lower shield layer via a second exchange coupling function gap layer that is positioned between the second ferromagnetic layer and the lower shield layer, such that a magnetization of the second ferromagnetic layer is inclined with respect to the track width direction, the first ferromagnetic layer has a rectangular shape which has two sides parallel with respect to the track width direction and two sides orthogonal with respect to the track width direction when it is viewed from the upper part of the lamination direction, the second ferromagnetic layer has a rectangular shape which has two sides parallel with respect to the track width direction and two sides orthogonal with respect to the track width direction when it is viewed from the upper part of the lamination direction, and the magnetoresistive effect element does not have an applying part to apply the bias magnetic field with respect to the first ferromagnetic layer and the second ferromagnetic layer.