Investigation of the Na-Ga Phase Diagram.

ABSTRACT: The Na-Ga phase diagram was reinvestigated by heat-flux differential scanning calorimetry (HF-DSC) and powder X-ray diffraction (PXRD). The most sodium-rich phase, Na₂₂Ga₃₉, melts congruently (549(2) °C), while Na₇Ga₁₃ (545(2) °C), Na₂Ga₇ (501(2) °C), and NaGa₄ (495(2) °C) decompose peritectically. In the sodium-rich region, a monotectic reaction between Na₂₂Ga₃₉ and melt occurs at 495(2) °C. The critical temperature of the liquid two-phase region was estimated to 523(2) °C. The subtle differences in the decomposition temperatures of neighboring phases were resolved by differential thermal analysis using a mutual sample reference method.

SUBMITTER: Yu CC 

PROVIDER: S-EPMC12824930 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature