The method 14, wherein each of {HEAD ~ the magnetic particles} has an easy axis parallel to a surface of {TAIL ~ the substrate} 
The method 14 , wherein each of { HEAD ~ the magnetic particles } has an easy axis parallel to a surface of { TAIL ~ the substrate }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL