Patent ID: 7324312

Claim:
A magnetic head, comprising: an in-stack bias structure, comprising an antiferromagnetic layer; a first bias layer positioned towards the antiferromagnetic layer, a magnetic moment of the first bias layer being pinned by the antiferromagnetic layer; a first antiparallel coupling layer positioned adjacent the first bias layer; and a second bias layer positioned between the first antiparallel coupling layer and a second antiparallel coupling layer and having a magnetic moment pinned antiparallel to the magnetic moment of the first bias layer; the second antiparallel coupling layer positioned adjacent the second bias layer of layer of the bias structure; and a free layer structure positioned adjacent the second antiparallel coupling layer, comprising: a first free layer having a magnetic moment; and a second free layer having a magnetic moment antiparallel coupled to the magnetic moment of the first free layer; wherein the second bias layer is antiparallel coupled to the first free layer of the free layer structure for stabilizing the free layer structure.