[en] Rare earth molybdates are very important materials for manufacturing various devices in different fields of modern technology because of their interesting laser, fluorescence, ferroelectric and ferroelastic properties. Gd₂(MoO₄)₃(s) exists in three crystallographic modifications (α, β, and β'). The room temperature α phase is stable up to 908 K, β phase is stable above 908 and β' phase is the meta stable β phase at room temperature. The room temperature phase is a good phosphor for solid state lighting application. In this paper the heat capacity of α phase of Gd₂(MoO₄)₃(s) has been measured using differential scanning calorimeter