{HEAD ~ The high pinning stability} may be achieved using {TAIL ~ the same anti ferromagnetic materials} for two spin valves by introducing a double synthetic anti ferromagnetic structure in one of the two spin valves 
achieved using
{ HEAD ~ The high pinning stability } may be achieved using { TAIL ~ the same anti ferromagnetic materials } for two spin valves by introducing a double synthetic anti ferromagnetic structure in one of the two spin valves
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH