The present invention includes the discovery that {HEAD ~ BeTe} is chemically active in {TAIL ~ air} and tends to react with oxygen to form an amorphous BeO layer 
is chemically active in
The present invention includes the discovery that { HEAD ~ BeTe } is chemically active in { TAIL ~ air } and tends to react with oxygen to form an amorphous BeO layer
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH