One embodiment of the present invention is directed to a read head for a data storage device including a differential sensor for reading data from a data storage medium. The differential sensor includes a first and a second free layer. The magnetization of the free layers is anti-parallel. The read head also includes a first stabilization material disposed adjacent to the differential sensor. The first stabilization material includes a first hard magnet and a second hard magnet. The magnetization of the hard magnets is anti-parallel to each other. The read head also includes a second stabilization material disposed adjacent to the differential sensor. The second stabilization material includes a first hard magnet and a second hard magnet, wherein the magnetization of the hard magnets is anti-parallel to each other. The anti-parallel coupling of the first stabilization material and the second stabilization material enhances the anti-parallel magnetization of the free layers.