An insulator layer partially covers the trilayer stack such that {HEAD ~ a current} passing through {TAIL ~ the stack} is confined to the vicinity of the air bearing surface to increase sensitivity 
passing through
An insulator layer partially covers the trilayer stack such that { HEAD ~ a current } passing through { TAIL ~ the stack } is confined to the vicinity of the air bearing surface to increase sensitivity
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH