The weak magnetic field sensor 1, in which {HEAD ~ material} of the magnetic layer is selected from {TAIL ~ a group} consisting of amorphous metal, Permalloy and Supermalloy 
is selected from
The weak magnetic field sensor 1 , in which { HEAD ~ material } of the magnetic layer is selected from { TAIL ~ a group } consisting of amorphous metal , Permalloy and Supermalloy
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH