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.