The method 1, wherein {HEAD ~ the first cobalt film} has the thickness of {TAIL ~ 2 to 4 monolayers} 
The method 1 , wherein { HEAD ~ the first cobalt film } has the thickness of { TAIL ~ 2 to 4 monolayers }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL