Effect of sintering temperature on the crystal structure of SrMnO3

SrMnO3 is a potential solid oxide fuel cell (SOFC) cathode material. However, the formation of different crystalline phases and poor sinterability restrict its application as in SOFC. Thus, present study focused on synthesis monophasic using sintering temperatures with variable durations. The X-ray diffraction confirms gradual transformation hexagonal to orthorhombic SrMnO3. Minor amounts Hausmannite Mn3O4 Ruddlesden-popper phase Sr4Mn3O10 are also observed. volume fraction increases increasing temperature. At temperature 1300°C for 4 hours, secondary minimum.