An epitaxial nitride layer is deposited on {HEAD ~ a single crystal substrate} to form {TAIL ~ a nitride coated substrate} 
An epitaxial nitride layer is deposited on { HEAD ~ a single crystal substrate } to form { TAIL ~ a nitride coated substrate }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL