{HEAD ~ Recording media} having protective overcoats of {TAIL ~ highly tetrahedral amorphous carbon} and methods for their production 
{ HEAD ~ Recording media } having protective overcoats of { TAIL ~ highly tetrahedral amorphous carbon } and methods for their production
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH