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