When a layer having many lattice defects in which oxygen atoms lack is formed on a metal oxide crystal body such as sapphire in this manner, oxygen on the surface enters {HEAD ~ the lattice defects} to try to create {TAIL ~ a stable state} 
to try to create
When a layer having many lattice defects in which oxygen atoms lack is formed on a metal oxide crystal body such as sapphire in this manner , oxygen on the surface enters { HEAD ~ the lattice defects } to try to create { TAIL ~ a stable state }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL