Abstract
Single crystals of scandium oxide were synthesized electrochemically with applying the Sc3+ ion conducting Sc2(MoO4)3 solid electrolyte at 1223 K. Generally, single crystal growth of such refractory oxides as Sc2O3 is considerably difficult by the conventional thermal heating-cooling crystal growth procedure, because the melting point of Sc2O3 is as high as ca. 2773 K. The electrochemical method in this study can be simply applicable at moderate temperatures around 1273 K for the single crystal growth of refractory rare earth oxides by applying rare earth ion conducting Ln2(MoO4)3 solid electrolyte series.
