Phase diagram of CdO–V2O5–In2O3 system

•A new compound with the formula Cd3In4V6O24 has been obtained as a result of a solid-state reaction.•Thermal properties of Cd3In4V6O24 has been established.•The subsolidus phase relations of the ternary system CdO–V2O5–In2O3 were investigated.

The subsolidus phase equilibria of the ternary system CdO–V2O5–In2O3 were investigated by differential thermal analysis (DTA) and X-ray diffraction technique (XRD). It has been shown that the system consists of ten subsidiary systems in which three solid phases coexist in equilibrium in each subsystem. CdV2O6 and In2O3-were proved to react in the solid phase and at the molar ratio of 3:2 and the formation of a new compound Cd3In4V6O24 was observed. This new compound undergoes incongruent melting at 920 °C with deposition of solid In2O3. Cd3In4V6O24 crystallises in the monoclinic system with elementary cell parameters of a = 0.8793(1) nm, b = 1.578(1) nm, c = 0.7506(7) nm, γ = 96.6°, Z = 2.