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