{HEAD ~ The ceramic} contains a titanate from the titanate powder, the acceptor additive, and {TAIL ~ the optional sintering aids} and donor additive 
contains
{ HEAD ~ The ceramic } contains a titanate from the titanate powder , the acceptor additive , and { TAIL ~ the optional sintering aids } and donor additive
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH