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