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