Phase equilibria in the Zn–Mn–O system

Different ratios of ZnO and MnCO3 were mixed and processed by ceramic route to investigate phase relations in the Zn–Mn–O system using differential thermal analysis and X-ray powder diffraction techniques. Except for Zn1−xMnxO we detected two different spinel phases in this system. FactSage program was used for the construction of the Zn–Mn–O phase diagram in air and oxygen atmosphere. To verify the composition in several parts of the diagram at the temperature of interest, a number of high-temperature annealings followed by quenching was performed.