SOFT CHEMISTRY SYNTHESIS, CRYSTAL STRUCTURE AND 3D-AFM-MICRO-STRUCTURAL SURFACE FEATURES OF CALCIUM-BARIUM SELENATE MOLECULE WITH AB2X5 STRUCTURE

摘要

Acetate-citrate precursors were applied to synthesize amorphous gelatinous calcium barium selenate with molecular formula (Ca_(0.5)Ba_(0.5)Se2O5). The gel-product was sintering at 800°C for 2 hrs then well characterized by X-ray diffraction, SEM and EDX elemental analyses and proved that the product C_(0.5)Ba_(0.5)Se2O5 is mainly belong to AB2X5-type structure with average grain size ranged in between 1.2-3.8 μm. A visualized study was constructed depending upon SEM and 3D-AFM experimental data to confirm the the microstructure morphological features of calcium-barium selenate surface.