Patent ID: 8686520

Claim:
A magnetoresistive structure comprising: a first pinned ferromagnetic layer; a first nonmagnetic spacer layer in physical contact with the first pinned ferromagnetic layer; a second free ferromagnetic layer in physical contact with the first nonmagnetic spacer layer; a first free antiferromagnetic layer in physical contact with the second free ferromagnetic layer; a second nonmagnetic spacer layer in physical contact with the first free antiferromagnetic layer; a second pinned antiferromagnetic layer in physical contact with the second nonmagnetic spacer layer; a third pinned ferromagnetic layer in physical contact with the second pinned antiferromagnetic layer; and a third pinned antiferromagnetic layer in physical contact with the first pinned ferromagnetic layer, wherein the third pinned ferromagnetic layer and the third pinned antiferromagnetic layer are terminal layers of the magnetoresistive structure.