Magnetic element with improved stability and including at least one antiferromagnetic tab

An apparatus comprising:

• a magnetically responsive stack with a first areal extent and comprising a spacer layer positioned between first and second ferromagnetic free multi-layer structures that each comprise a CoxFe1-x layer coupled to the spacer layer, a (CoxFe1-x)yB1-y layer coupled to an AFM tab, and a NixFe1-x layer disposed between the CoxFe1-x and (CoxFe1-x)yB1-y layers;
• and
• the antiferromagnetic (AFM) tab coupled to the first free layer on a surface thereof opposite the spacer layer, the AFM tab having a second areal extent that is less than the first areal extent.

A magnetic element comprising:

• a non-magnetic tunneling barrier layer disposed between a first ferromagnetic free layer and a second ferromagnetic free layer with a first areal extent;
• and
• at least one antiferromagnetic (AFM) tab connected to the first or second free layers on a surface thereof opposite the spacer layer and spaced an offset distance away from a front surface of the first free ferromagnetic layer.