I am collecting the lattice parameters for multiple materials. I started with BiFeO3 and wanted to look up the lattice parameter of its room-temprature phase (space group R3c, rhombohedral). I found this record with a material_ID of mp-23501, and it says a = 5.59 A, c = 5.65 A. However, this is quite different from the values reported from published work, for a example, a = 3.96 A (Structural Instability of Epitaxial (001) BiFeO3 Thin Films under Tensile Strain | Scientific Reports). I am confused about this result, how could there be such a big difference? Which one is the correct one? Going forward, should I trust materials project as a reliable source to collect massive lattice parameters? Any input is appreciated!
