The free layer 11 and pinned {HEAD ~ layer} 12 may have {TAIL ~ a structure} including stacked magnetic layers 
have
The free layer 11 and pinned { HEAD ~ layer } 12 may have { TAIL ~ a structure } including stacked magnetic layers
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH