In this study, ruby (Cr3+ doped Al2O3) was synthesized through the citrate method employing citric acid in excess as a chelating and fuel agent. The primary focus of our study was on two critical phase heat points, TPH, and TPD. The system was considered opaque, and we aimed to comprehend the behavior of crystal structure formation. Thermal kinetics was examined using the Coates-Redfern method, an...