Patent ID: 9047893
Filing Date: 2015-06-02
Classification: G11B,H01L

Abstract:
1. A magnetic sensor, comprising: a sensor stack having a first portion and a second portion formed over the first portion, the first portion having a width that defines a sensor track-width and the second portion having a width that extends beyond the sensor track-width; wherein the first portion of the sensor stack includes: a magnetic free layer; a non-magnetic layer; and a first portion of a first magnetic pinned layer, the non-magnetic layer being sandwiched between the magnetic free layer and the first portion of the first magnetic pinned layer; and the second portion of the sensor stack includes: a second portion of the first magnetic pinned layer; a second magnetic pinned layer; a non-magnetic anti-parallel coupling layer sandwiched between the first magnetic pinned layer and the second magnetic pinned layer; and a layer of anti-ferromagnetic material exchange coupled with the second magnetic pinned layer.