A magnetoresistive sensor having two free layers with shape anisotropy
induced magnetic alignment is disclosed. The magnetoresistive sensor
includes a first ferromagnetic free layer having a first quiescent state
magnetization direction. The magnetoresistive sensor also includes a
second elongated free layer having a second quiescent state magnetization
direction and positioned such that the first quiescent state
magnetization direction is generally orthogonal to the second quiescent
state magnetization direction. Further, a portion of the second
ferromagnetic free layer overlaps a portion of the first ferromagnetic
free layer proximal to an air bearing surface to form a v-shape. A
nonmagnetic spacer layer is also positioned between the first
ferromagnetic free layer and the second ferromagnetic free layer.