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