Subsolidus phase relations of the ZnO–Li 2O–P 2O 5 system

Abstract

As a systematic search for suitable flux to grow zinc oxide single crystals, the subsolidus phase relations of the ternary system ZnO–Li 2O–P 2O 5 were investigated by means of X-ray diffraction (XRD). There are 6 binary compounds, 5 ternary compounds and 17 three-phase regions in this system. A new compound, Li 6Zn(P 2O 7) 2, is found in this system based on XRD experiments. The phase diagrams of the pseudo-binary systems Li 3PO 4–ZnO and LiZnPO 4–ZnO are investigated. It shows that the compounds, Li 3PO 4 and LiZnPO 4, are not suitable as flux for the growth of ZnO single crystals below 1250 °C.