Phase Diagram of the System Na₂O·Ga₂O₃‐Ga₂O₃ and its Relation to the System Na₂O·Al₂O3‐Al₂O3

A new phase diagram for the system Na2O‐Ga2O3 (>50 mol% Ga2O3) is presented. It is based on information from differential thermal analysis, X‐ray examination of quenched samples, and a radiochemical technique for determining the compositions of a primary phase and a liquid in equilibrium with it. The diagram provides a guide for the growth of primary crystals of the two ionically conducting sodium gallates that are analogs of the technologically important β‐ and β″‐aluminas. Copyright © 1980, Wiley Blackwell. All rights reserved