α- and β-Ga₂O₃ nanorods were prepared by heating the GaOOH, made via urea hydrolysis of Ga(NO₃)₃ at 70°C. SEM images confirm rod like morphology of these samples. XRD studies show formation of α-Ga₂O₃ and β- Ga₂O₃ at 500°C and 900°C respectively. This is further confirmed from the TG/DTA showing mass loss and heat evolution at these temperatures. Raman studies of GaOOH, α-Ga₂O₃ and β-Ga₂O₃ show systematic changes in their basic structural units as the different phases are formed.