A magnetoresistive sensor has {HEAD ~ at least a trilayer stack} comprising a cap layer, {TAIL ~ a first ferromagnetic layer}, and a second ferromagnetic layer separated by a nonmagnetic layer 
comprising
A magnetoresistive sensor has { HEAD ~ at least a trilayer stack } comprising a cap layer , { TAIL ~ a first ferromagnetic layer } , and a second ferromagnetic layer separated by a nonmagnetic layer
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH