According to the second aspect of the present invention, {HEAD ~ an intermediate layer} mainly composed of Si or Ge is provided between {TAIL ~ the substrate} and a diamond like carbon film 
is provided between
According to the second aspect of the present invention , { HEAD ~ an intermediate layer } mainly composed of Si or Ge is provided between { TAIL ~ the substrate } and a diamond like carbon film
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH