{HEAD ~ The chemical constituent} is slowly removed from the primary reactant by the reaction of the chemical constituent vapor with a secondary reactant, spatially separated from the primary reactant, in a closed volume under {TAIL ~ uniaxial pressure} and heat to form the single phase pure crystals 
{ HEAD ~ The chemical constituent } is slowly removed from the primary reactant by the reaction of the chemical constituent vapor with a secondary reactant , spatially separated from the primary reactant , in a closed volume under { TAIL ~ uniaxial pressure } and heat to form the single phase pure crystals
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH